TY - GEN
T1 - Antenna selection for noncoherent space-time-frequency coded OFDM systems
AU - Ma, Qian
AU - Tepedelenlioglu, Cihan
PY - 2006/1/1
Y1 - 2006/1/1
N2 - This paper studies receiver antenna selection (AS) for multi-antenna systems operating over frequency selective channels, where the channel state information (CSI) is neither known at the transmitter nor at the receiver. We consider AS for noncoherent space-time-frequency (STF) coded orthogonal frequency division multiplexing (OFDM) systems that employ unitary signals. An OFDM receiver with a single RF chain is employed, and the selection is based on the received signal power, where the receive antenna with the largest received signal power averaged over all subcarriers is chosen. Theoretical analysis and simulations show that using AS, the maximum spatial and multipath diversity can still be obtained without CSI at the receiver, the same as the full-complexity multi-antenna OFDM systems. We simplify code design and decoding using subcarrier grouping, which enables us to apply existing full diversity codes for noncoherent STF-OFDM systems to each group, in order to obtain maximum spatial and multipath diversity when AS is used. We also present a low-complexity suboptimal decoder that achieves full diversity and can be easily implemented in practice.
AB - This paper studies receiver antenna selection (AS) for multi-antenna systems operating over frequency selective channels, where the channel state information (CSI) is neither known at the transmitter nor at the receiver. We consider AS for noncoherent space-time-frequency (STF) coded orthogonal frequency division multiplexing (OFDM) systems that employ unitary signals. An OFDM receiver with a single RF chain is employed, and the selection is based on the received signal power, where the receive antenna with the largest received signal power averaged over all subcarriers is chosen. Theoretical analysis and simulations show that using AS, the maximum spatial and multipath diversity can still be obtained without CSI at the receiver, the same as the full-complexity multi-antenna OFDM systems. We simplify code design and decoding using subcarrier grouping, which enables us to apply existing full diversity codes for noncoherent STF-OFDM systems to each group, in order to obtain maximum spatial and multipath diversity when AS is used. We also present a low-complexity suboptimal decoder that achieves full diversity and can be easily implemented in practice.
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U2 - 10.1109/CISS.2006.286402
DO - 10.1109/CISS.2006.286402
M3 - Conference contribution
AN - SCOPUS:44049097758
SN - 1424403502
SN - 9781424403509
T3 - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
SP - 1665
EP - 1669
BT - 2006 IEEE Conference on Information Sciences and Systems, CISS 2006 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2006 40th Annual Conference on Information Sciences and Systems, CISS 2006
Y2 - 22 March 2006 through 24 March 2006
ER -