Coding approaches for multiple antenna transmission in fast fading and OFDM

被引：88

作者：

Müller-Weinfurtner, SH ^{[1
]}

机构：

[1] Bell Labs, Lucent Technol, Wireless Syst Res Dept, Middletown, NJ 07748 USA

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2002年 / 50卷 / 10期

关键词：

BICM; bit interleaving; capacity; fast fading; multiple antennas; OFDM; space-time channel coding; STC; wireless;

D O I：

10.1109/TSP.2002.803351

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multiple-antenna channel coding for orthogonal frequency-division multiplexing (OFDM) transmission over dispersive channels is reconsidered because with frequency interleaving, the effective channel characteristic across subcarriers is rather fast fading. The channel does not comply with the quasistatic model widely assumed for space-time trellis codes (STCs). For that reason, we first study the ideal fast-fading multiple transmit and receive antenna channel and then compare the performance of STCs with that of bit-interleaved coded modulation in fast fading. Mutual information of the ergodic channel is evaluated for numerous modulation scenarios, and capacity comparisons generate guidelines on how to jointly adjust coding rate and modulation cardinality. Bit-based coding offers large flexibility in rate adaptation, and simulation results show that it outperforms STCs in ideal fast fading and, finally, in a realistic OFDM application as well.

引用

页码：2442 / 2450

页数：9

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