Transmitter diversity for OFDM systems and its impact on high-rate data wireless networks
作者： Ye Li , J.C. Chuang , N.R. Sollenberger
DOI: 10.1109/49.778182
关键词:
摘要: Transmitter diversity and down-link beamforming can be used in high-rate data wireless networks with orthogonal frequency division multiplexing (OFDM) for capacity improvement. We compare the performance of delay, permutation space-time coding transmitter packet using OFDM modulation. For these systems, relatively high block error rates, such as 10%, are acceptable assuming use effective automatic retransmission request (ARQ). As an alternative, we also consider same number antennas diversity. The investigation indicates that delay quaternary phase-shift keying (QPSK) modulation adaptive antenna arrays provides a good quality service (QoS) low probability, while peak rates. Down-link together arrays, however, higher than typical mobile environments.
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