TY  - JOUR
T1  - Transmitter diversity for OFDM systems and its impact on high-rate data wireless networks.
JF  - IEEE Journal on selected areas in communications
A1  - Ye Li
LA  - English
UL  - https://tuklas.up.edu.ph/Record/UP-99796217609350701
AB  - 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 and space-time coding transmitter diversity for high-rate packet data wireless networks using OFDM modulation. For these systems, relatively high block error rates, such as 10%, are acceptable assuming the use of effective automatic retransmission request (ARQ). As an alternative, we also consider using the same number of transmitter antennas for down-link beamforming as we consider for transmitter diversity. The investigation indicates that delay transmitter diversity with quaternary phase-shift keying (QPSK) modulation and adaptive antenna arrays provides a good quality of service (QoS) with low retransmission probability, while space-time coding transmitter diversity provides high peak data rates. Down-link beamforming together with adaptive antenna arrays, however, provides a higher capacity than transmitter diversity for typical mobile environments
KW  - ARQ.
KW  - OFDM modulation.
KW  - OFDM systems.
KW  - QPSK.
KW  - QoS.
KW  - Adaptive antenna arrays.
KW  - Automatic retransmission request.
KW  - Capacity.
KW  - Cellular radio.
KW  - Delay.
KW  - Down-link beamforming.
KW  - High block error rates.
KW  - High peak data rates.
KW  - High-rate data wireless networks.
KW  - High-rate packet data wireless networks.
KW  - Low retransmission probability.
KW  - Mobile environments.
KW  - Orthogonal frequency division multiplexing.
KW  - Performance.
KW  - Permutation.
KW  - Quality of service.
KW  - Quaternary phase-shift keying.
KW  - Space-time coding transmitter diversity.
KW  - Transmitter antennas.
ER  -