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Unified Optimal Power Allocation Strategy for MIMO Candidates in 3GPP HSDPA

2005; Electronics and Telecommunications Research Institute; Volume: 27; Issue: 6 Linguagem: Inglês

10.4218/etrij.05.1005.0008

2233-7326

Sungjin James Kim, Hojin Kim, Kwang Bok Lee,

Wireless Communication Networks Research

We compare the achievable throughput of time division multiple access (TDMA) multiple-input multiple-output (MIMO) schemes illustrated in the 3rd Generation Partnership Project (3GPP) MIMO technical report, versus the sum-rate capacity of space-time multiple access (STMA). These schemes have been proposed to improve the 3GPP high speed downlink packet access (HSDPA) channel by employing multiple antennas at both the base station and mobile stations. Our comparisons are performed in multi-user environments and are conducted using TDMA such as Qualcomm's High Data Rate and HSDPA, which is a simpler technique than STMA. Furthermore, we present the unified optimal power allocation strategy for HSDPA MIMO schemes by exploiting the similarity of multiple antenna systems and multi-user channel problems.