HSDPA in Gaussian MIMO Broadcast Channels
نویسندگان
چکیده
We compare the achievable throughput of time division multiple access multiple-input multiple output (TDMAMIMO) scheme illustrated in 3rd generation partnership project (3GPP) MIMO technical report (TR), versus the sum-rate capacity of a space-time multiple access (STMA). These schemes have been proposed to improve 3GPP high speed downlink packet access (HSDPA) channel by employing multiple antennas at both transmitter and receiver. Our comparisons are focused on the performance in multi-user environments, which is considered using TDMA which is a simpler technique than STMA (e.g., Qualcomm’s High Dare Rate (HDR) and WCDMA/HSDPA). In addition, we introduce optimal power allocation strategy for HSDPA MIMO schemes under Gaussian MIMO broadcast channels (BC) by using the similarity of multiple antenna systems and multi-user channel problems.
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