Safoora Zaminpardaz, P. J. G. Teunissen, Amir Khodabandeh,
... standalone GLONASS RTK performance is provided using its FDMA and CDMA signals. The new integer-estimable GLONASS FDMA model (Teunissen 2019), which guarantees the integer-estimability ... employed. We introduce the combined integer-estimable GLONASS FDMA+CDMA model and compare its strength against the FDMA model for instantaneous integer ambiguity resolution and positioning. Various combinations of GLONASS signals are considered including FDMA L1, FDMA+CDMA L1+L3, FDMA L1+L2 and FDMA+CDMA L1+L2+L3. ...
Tópico(s): Geophysics and Gravity Measurements
2021 - Springer Science+Business Media | GPS Solutions
Elhadi Mehallel, Djamel Abed, Abdelnour Boukaache, Ammar Bouchemel,
... adopts single‐carrier frequency division multiple access (SC‐FDMA) technique for high data‐rate uplink wireless communication ... scheme for the discrete wavelet transform‐based SC‐FDMA (DWT SC‐FDMA) system to improve the transmission quality of images. ... excellent orthogonality and spectral containment from DWT SC‐FDMA and performances enhancement from chaotic interleaving. The performances evaluation of the DWT‐SC‐FDMA system with the chaotic interleaving scheme for efficient ... studied and compared with two schemes of SC‐FDMA‐based systems: discrete Fourier transform SC‐FDMA (DFT ...
Tópico(s): Digital Filter Design and Implementation
2021 - Wiley | International Journal of Communication Systems
M. Ibrahim, Fatma Newagy, I.M. Hafez,
... forcing equalisation and CFO compensation for MIMO SC-FDMA systems Mohamed Mostafa, Corresponding Author Mohamed Mostafa m. ... In single carrier frequency division multiple access (SC-FDMA) systems, frequency domain equalisers suffer performance degradation due ... and evaluation of the transmission performance of SC-FDMA systems [1-3]. Two main issues have been ... degradation when investigating the transmission performance of SC-FDMA systems, namely, the peak to average power ratio ( ... frequency offset (CFO) at the receiver side. SC-FDMA systems can be implemented in two possible formats, ...
Tópico(s): Advanced Power Amplifier Design
2016 - Institution of Engineering and Technology | IET Communications
Marilynn P. Wylie-Green, Erik Perrins, Tommy Svensson,
... of single carrier frequency division multiple access (SC-FDMA) with continuous phase modulation (CPM) in order to generate a power efficient waveform. CPM-SC-FDMA is developed based upon the observation that the ... the Discrete Fourier Transform and transmitted using SC-FDMA. Having originated from a constant envelope CPM waveform, CPM-SC-FDMA can potentially retain much of the power efficiency ... to-average power ratio (PAPR) than conventional SC-FDMA. In this paper, we account for the information ... BER) performance and spectral occupancy of CPM-SC-FDMA. In addition, we investigate the impact of amplifier ...
Tópico(s): Wireless Communication Networks Research
2011 - IEEE Communications Society | IEEE Transactions on Communications
Hyung G. Myung, Junsung Lim, D.J. Goodman,
Single carrier frequency division multiple access (SC FDMA), a modified form of orthogonal FDMA (OFDMA), is a promising technique for high data rate uplink communications in future cellular systems. SC-FDMA has similar throughput performance and essentially the same ... complexity as OFDMA. A principal advantage of SC-FDMA is the peak-to-average power ratio (PARR), which is lower than that of OFDMA. SC FDMA is currently a strong candidate for the uplink ... this paper, we give an overview of SC-FDMA. We also analyze the effects of subcarrier mapping ...
Tópico(s): PAPR reduction in OFDM
2006 - Institute of Electrical and Electronics Engineers | IEEE Vehicular Technology Magazine
Junsung Lim, Hyung G. Myung, Kyung Jin Oh, D.J. Goodman,
... examine single carrier frequency division multiple access (SC-FDMA) with frequency domain equalization for uplink data transmission. ... There are two subcarrier mapping schemes in SC-FDMA: Localized FDMA (L-FDMA) and Interleaved FDMA (I- FDMA). L-FDMA benefits from frequency selective scheduling, but it incurs higher peak-to-average power ratio than I-FDMA. Throughout our work, we provide low complexity channel- dependent scheduling (CDS) methods for L-FDMA and I-FDMA. The results show that rate- ...
Tópico(s): Cooperative Communication and Network Coding
2006 - Institute of Electrical and Electronics Engineers | IEEE Vehicular Technology Conference
Wenjin Wang, Xiqi Gao, Fu‐Chun Zheng, Wen Zhong,
... based single-carrier frequency division multiple access (SC-FDMA) has been widely adopted due to its lower ... cannot be directly applied into the existing SC-FDMA. When pulse-shaping filters are employed to further ... the envelope fluctuation of transmit signals of SC-FDMA, the spectral efficiency degrades as well. In order to overcome such limitations of conventional SC-FDMA, this paper for the first time investigated cyclic prefixed OQAM-OFDM (CP-OQAM-OFDM) based SC-FDMA transmission with adjustable user bandwidth and space-time ...
Tópico(s): Wireless Communication Networks Research
2013 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Wireless Communications
Tomohiro Kawamura, Yoshihisa Kishiyama, Kenichi Higuchi, Mamoru Sawahashi,
... uplink, single-carrier frequency division multiple access (SC-FDMA) radio access was adopted owing to its advantageous ... orthogonal pilot channel generation using the combination of FDMA and CDMA in the SC-FDMA-based Evolved UTRA uplink. In the proposed method, we employ distributed FDMA transmission for simultaneous accessing users with different transmission ... an orthogonal pilot channel with the combination of FDMA and CDMA in a six-user environment, i. ... pilot channel structure using the combination of distributed FDMA and CDMA transmissions and the application of the ...
Tópico(s): PAPR reduction in OFDM
2008 - Institute of Electronics, Information and Communication Engineers | IEICE Transactions on Communications
Heung‐Gyoon Ryu, Tran Phuong Hoa, Nguyen Thanh Hieu, Jin Jianxue,
... effect on the forward link of the OFDM-FDMA (frequency division multiple access) communication system. BER (bit error rate) performance of OFDM-FDMA system using clipping method is theoretically analyzed. We ... investigate the BER performance of the clipped OFDM-FDMA signal including the HPA and quantify the appropriate ... found that the BER performance of the OFDM-FDMA system is degraded by the clipping process. When ... is about 2, BER of the clipped OFDM-FDMA with only in-band noise and in-band ... noise closely approaches to the BER of OFDM-FDMA without clipping. The simulation results also show that ...
Tópico(s): Advanced Wireless Communication Techniques
2004 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Consumer Electronics
Jiayi Zhang, Lie‐Liang Yang, Lajos Hanzo, Hamid Gharavi,
... principle of single-carrier frequency-division multiple-access (FDMA) and the similarities and dissimilarities, advantages, and weakness of the localized FDMA, the interleaved FDMA, and the orthogonal FDMA systems are compared. Furthermore, the philosophy of both user cooperation and cooperative single-carrier FDMA is reviewed. They are investigated in the context ... resources in the context of cooperative single-carrier FDMA system, which is a promising enabler for various ...
Tópico(s): Advanced MIMO Systems Optimization
2015 - Institute of Electrical and Electronics Engineers | IEEE Communications Surveys & Tutorials
... MIMO) single-carrier frequency-division multiple access (SC-FDMA) systems. Various optimal and near-optimal MIMO detection ... channels are not readily applied to MIMO SC-FDMA systems due to the large dimensions of the ... equation of single-input-single-output (SISO) SC-FDMA systems was divided into a number of disjoint ... naively extending the previous scheme for SISO SC-FDMA to MIMO SC-FDMA systems, we first express the large system equation of MIMO SC-FDMA, such that the effective channels are block circulant ...
Tópico(s): Advanced MIMO Systems Optimization
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Vehicular Technology
... microvascular tissue transfers. The first dorsal metatarsal artery (FDMA) perforator propeller flap represents another variation of this theme.A standard FDMA flap from the dorsum of the foot was ... perforator and the defect was kept with the FDMA flap as an attached minor blade, to thereby create an FDMA propeller flap.Salvage of the great toe in ... of the donor site defect of the traditional FDMA major blade, to permit tension-free donor site ... the dorsal foot without sequela.The distal-based FDMA flap can be useful as a local flap ...
Tópico(s): Wound Healing and Treatments
2014 - Lippincott Williams & Wilkins | Annals of Plastic Surgery
Mark Geles, Amir Averbuch, Ofer Amrani, Дорон Эзри,
Single Carrier FDMA (SC-FDMA) plays an important role in modern wireless communications as an alternative to OFDM mainly since it exhibits low peak-to-average power ratio. Accordingly, SC-FDMA is employed as the uplink scheme for the ... LTE). In the presence of multipath, the SC-FDMA signal may arrive at the receiver perturbed by ... equalization suboptimal. Optimum maximum likelihood detection for SC-FDMA is often prohibitively complex, and hence useful mostly ... behavior is demonstrated under optimum detection of SC-FDMA. The analytical results are verified by simulations.
Tópico(s): Advanced Wireless Communication Technologies
2012 - IEEE Communications Society | IEEE Transactions on Communications
Xiqi Gao, Wenjin Wang, Xiang‐Gen Xia, E.K.S. Au, Xiaohu You,
Single-carrier frequency division multiple access (SC-FDMA) has appeared to be a promising technique for high data rate uplink communications. Aimed at SC-FDMA applications, a cyclic prefixed version of the offset ... We then apply CP-OQAM-OFDM to SC-FDMA transmission in frequency selective fading channels. Signal model ... Compared with the existing DFTS-OFDM based SC-FDMA, the proposed SC-FDMA can significantly reduce envelope fluctuation (EF) of the ... results confirm the effectiveness of the proposed SC-FDMA in terms of EF (including peak-to-average ...
Tópico(s): Wireless Communication Networks Research
2011 - IEEE Communications Society | IEEE Transactions on Communications
Liming Huang, Ten‐Chin Wen, A. Gopalan,
... for different molar feed compositions of DMA/ANI (fDMA/fANI) by chemical oxidative polymerization using ammonium persulfate ... results show that molar composition of DMA units (FDMA) increased with increasing fDMA up to 0.60. A compositional drift in FDMA was noticed when the feed ratio of DMA ... The redox characteristics of the copolymers with different FDMA were found to show variations than PDMA and ... the copolymer was found to decrease with increasing FDMA. The copolymers were soluble in N-methylpyrroldione, dimethylformamide, ...
Tópico(s): Analytical Chemistry and Sensors
2003 - Elsevier BV | Materials Letters
Tetsuya Noda, Yotaro Morishima,
... AMPS) and dodecyl methacrylate (DMA) with its content (fDMA) varying from 1 to 15 mol % was investigated ... the copolymers was found to depend strongly on fDMA. When fDMA < 3 mol %, some polymer chains exist as unimers ... by the interpolymer association of dodecyl groups. When fDMA is increased to 9 mol %, interpolymer hydrophobe associations ... core was estimated to be about 195. When fDMA is further increased to 15 mol %, Rh for ... micelle model was proposed for the copolymer with fDMA = 9 mol %, and a bridged micelle model was ...
Tópico(s): Advanced Polymer Synthesis and Characterization
1999 - American Chemical Society | Macromolecules
Keisuke Kinoshita, Masayuki Hata, K. Hirade,
... they require radio channels. Frequency division multiple access (FDMA) scheme using single channel per carrier (SCPC) has been widely used. However, the SCPC-FDMA scheme has some problems, such as difficulty in ... A time and frequency division multiple access (TD/FDMA) scheme, which is a combination scheme of TDMA and FDMA, is proposed as one of the possible solutions ... proposal, some of the restrictions of the TD/FDMA scheme resulting from the land mobile radio channel ... the digital mobile radio telephone system using TD/ FDMA scheme is then presented. An example of the ...
Tópico(s): Telecommunications and Broadcasting Technologies
1982 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Vehicular Technology
Fengzhou Dai, Haosheng Fu, Ling Hong, Long Li, Hongwei Liu,
... an emerging technology and has attracted wide attention. FDMA based CMI (FDMA-CMI) can be considered as microwave compressive sensing imaging with the frequency diversity pattern of the FDMA being the sensing matrix and solved by sparse ... this paper, we propose a novel algorithm for FDMA-CMI, referred to as OGSISBL, by taking both ... imaging system due to the principle of the FDMA. Then, under the framework of the sparse Bayesian ... measured data collected by the self-designed experimental FDMA-CMI system, and the results validate the effectiveness ...
Tópico(s): Millimeter-Wave Propagation and Modeling
2022 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Geoscience and Remote Sensing
Ignacio Roger de Oña, Andrea Garcia Villanueva, Alexis Studer de Oya,
... may be precluded. The first dorsal metatarsal artery (FDMA), originating from the dorsalis pedis artery, provides the ... first step requires identifying the presence of the FDMA using a Doppler probe. Next, measurements of the ... used to expose the subcutaneous veins and the FDMA. Once the vessels are isolated, the dissection proceeds ... MTP joint including the second metatarsal, using the FDMA as a single pedicle (Fig. 3). If necessary, ... the corresponding digital nerves of the thumb. The FDMA and 2 dorsal veins were anastomosed end to ...
Tópico(s): Reconstructive Facial Surgery Techniques
2018 - Elsevier BV | The Journal Of Hand Surgery
Kimia Shamaei, Maryam Sabbaghian,
... a single carrier frequency division multiple access (SC-FDMA) system impaired by frequency instabilities and timing offset. ... rate is available only for perfectly synchronized SC-FDMA systems in the literature. In fact, the performance of SC-FDMA systems in the presence of time or frequency ... the symbol error rate (SER) of an SC-FDMA system impaired by time or frequency offsets when ... can accurately evaluate the SER performance of SC-FDMA systems in the presence of time and frequency ...
Tópico(s): PAPR reduction in OFDM
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Wireless Communications
Abhinav Ganesan, B. Sundar Rajan,
... Interference (SI) regime, with Gaussian input alphabets, the FDMA rate curve touches the capacity curve of the GSIC. Even as the Gaussian alphabet FDMA rate curve touches the capacity curve of the ... same finite constellation, we show that the CC FDMA rate curve lies strictly inside the CC capacity ... is known that, with Gaussian input alphabets, the FDMA inner-bound at the optimum sum-rate point ... the constellations can be strictly better than the FDMA inner-bound.
Tópico(s): Wireless Communication Security Techniques
2012 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Wireless Communications
Joseph L. Roti Roti, Robert S. Malyapa, Kheem S. Bisht, Eric W. Ahern, Eduardo G. Moros, William F. Pickard, W. Straube,
... 10T½ Cells after Exposure to 835.62 MHz FDMA and 847.74 MHz CDMA Radiations.The effect ... range (835.62 MHz frequency division multiple access, FDMA; 847.74 MHz code division multiple access, CDMA) ... assay system. To determine if 835.62 MHz FDMA or 847.74 MHz CDMA radiations have any ... To determine if exposure to 835.62 MHz FDMA or 847.74 MHz CDMA radiation has any ... to the antenna), and the 835.62 MHz FDMA or 847.74 MHz CDMA-exposed groups.
Tópico(s): Wireless Body Area Networks
2001 - Radiation Research Society | Radiation Research
This paper proposes Single Carrier-FDMA radar, which is not only a solution to the shortcomings of OFDM radars but also offers improved Ambiguity Function and autocorrelation properties.Unlike OFDM, the proposed SC-FDMA radar (with interleaved subcarrier mapping) does not suffer ... efficiency of the transmitter's power amplifier.SC-FDMA utilizes all the benefits of single-carrier modulation, ... frequency domain equalization.The wideband characteristics of SC-FDMA are beneficial in achieving high range resolution for ...
Tópico(s): Wireless Communication Networks Research
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Haoyuan Pan, Soung Chang Liew,
... in information update systems operated with TDMA and FDMA. Information freshness is characterized by a recently introduced ... of two basic multiple access schemes, TDMA and FDMA. We first derive the time-averaged AoI by ... consistent with our theoretical analysis. Although TDMA outperforms FDMA in terms of average AoI, FDMA is more robust against varying channel conditions since ...
Tópico(s): Cognitive Functions and Memory
2020 - Institute of Electrical and Electronics Engineers | IEEE Wireless Communications Letters
Roongsak Limthongthang, Perajit Eamsobhana,
... could be avoided. The first dorsal metatarsal artery (FDMA) perforator flap was one variant of this new ... this report was to describe our experience using FDMA perforator flap to cover great toe defect. Methods: A standard FDMA flap from the dorsum of the foot was ... the great toe was achieved in both patients. FDMA perforator flap achieved both reconstructive goals, and the ... complications by the 1-year follow-up. Conclusions: FDMA flap can be successfully used as a local ...
Tópico(s): Wound Healing and Treatments
2017 - SAGE Publishing | Journal of orthopaedic surgery
Darko Sinanović, Gordan Šišul, Borivoj Modlic,
... to single-carrier frequency-division multiple access (SC-FDMA). Therefore, we propose an SM modification, which is ... to preserve the low PAPR level of SC-FDMA and to achieve the benefits of SM. In ... very high computational complexity when applied to SC-FDMA system, we observed suboptimal receivers for SC-FDMA with LPSM. In addition to low-complexity linear ...
Tópico(s): Satellite Communication Systems
2016 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Vehicular Technology
Anxin Li, Anass Benjebbour, Xiaohang Chen, Huiling Jiang, Hidetoshi Kayama,
... with single carrier-frequency division multiple access (SC-FDMA) being used. Differently from OFDMA, SC-FDMA requires consecutive resource allocation to a user equipment ( ... designs of scheduling algorithm for NOMA with SC-FDMA are needed. To this end, this paper investigates ... for uplink resource allocation of NOMA with SC-FDMA. On the basis of the proposed scheduling schemes, ...
Tópico(s): Optical Wireless Communication Technologies
2015 - Institute of Electronics, Information and Communication Engineers | IEICE Transactions on Communications
Ying-Hui Shao, Gao-Feng Gu, Zhi‐Qiang Jiang, Wei‐Xing Zhou,
... algorithm (BDMA), centered algorithm (CDMA) and forward algorithm (FDMA). We derive a general framework for polynomial trends ... the fluctuation functions obtained from the BDMA and FDMA methods. When a crossover exists, the scaling behavior ... in some cases (linear trends for BDMA and FDMA) the length of the time series. In all cases, the BDMA and the FDMA behave almost the same under the influence of ... that the CDMA method outperforms the BDMA and FDMA methods in the presence of polynomial trends.
Tópico(s): Financial Risk and Volatility Modeling
2015 - World Scientific | Fractals
Jinwei Ji, Guangliang Ren, Huining Zhang,
... of single-carrier frequency-division multiple access (SC-FDMA) signals, we propose a novel alternative method, which ... Fourier transform precoder of a block of SC-FDMA symbols in a slot. Then, the candidate signal ... same way as that of the conventional SC-FDMA using the defined equivalent channel without side information. ... method achieves considerable improvements over the conventional SC-FDMA system in terms of both PAPR and bit- ...
Tópico(s): Optical Network Technologies
2014 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Vehicular Technology
Jinwei Ji, Guangliang Ren, Huining Zhang,
... coded single carrier frequency division multiple access (SC-FDMA) signals in the uplink of the Long Term ... few complex modulated symbols of each data SC-FDMA symbol in a sub-frame, which cause peaks ... proposed scheme can reduce the PAPR of SC-FDMA signals effectively with almost the same BER as the conventional SC-FDMA signals when the signal-to-noise ratio (SNR) ...
Tópico(s): Advanced Wireless Communication Techniques
2014 - IEEE Communications Society | IEEE Communications Letters