Space-time bit-interleaved coded modulation for OFDM systems in wireless LAN applications

被引：0
|
作者：
Lee, I [1 ]
Chan, AM [1 ]
Sundberg, CEW [1 ]
机构：
[1] Korea Univ, Dept Commun Engn, Seoul 136701, South Korea
来源：
2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5: NEW FRONTIERS IN TELECOMMUNICATIONS | 2003年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Space-Time coding techniques are methods to improve transmission efficiency in radio channels by using multiple transmit and/or receive antennas and coordination of the signaling over these antennas. Bit-interleaved coded modulation gives good diversity gains with higher order modulation schemes using well known binary convolutional codes. By using Orthogonal Frequency Division Multiplexing (OFDM), wideband transmission can be achieved over frequency selective fading radio channels. In this paper, we combine these three ideas into a family of flexible space-time coding methods where the modulation order and coding rate as well as the number of transmit and receive antennas can be changed without drastic redesign of the space-time codes. Near optimum iterative decoders are evaluated in terms of simulation for slowly varying wireless LAN type channels. Significant performance gains over the 802.11a standard system are reported.
引用
收藏
页码：3413 / 3417
页数：5
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