A low-complexity approach to space-time coding for multipath fading channels
EURASIP Journal on Wireless Communications and Networking
A family of distributed space-time trellis codes with asynchronous cooperative diversity
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Turbo equalization for block fading MIMO channels using random signal mapping
Computers and Electrical Engineering
Space-time coded OFDM with low PAPR
EURASIP Journal on Applied Signal Processing
Design of optimal space-time codes in TDD/TDMA 4G systems
WSEAS TRANSACTIONS on COMMUNICATIONS
IEEE Transactions on Wireless Communications
On the outage performance of relay systems in frequency selective fading channels
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Hi-index | 754.84 |
The authors introduced an algebraic design framework for space-time coding in flat-fading channels . We extend this framework to design algebraic codes for multiple-input multiple-output (MIMO) frequency-selective fading channels. The proposed codes strive to optimally exploit both the spatial and frequency diversity available in the channel. We consider two design approaches: The first uses space-time coding and maximum likelihood decoding to exploit the multi-path nature of the channel at the expense of increased receiver complexity. Within this time domain framework, we also propose a serially concatenated coding construction which is shown to offer a performance gain with a reasonable complexity iterative receiver in some scenarios. The second approach utilizes the orthogonal frequency division multiplexing technique to transform the MIMO multipath channel into a MIMO flat block fading channel. The algebraic framework is then used to construct space-frequency codes (SFC) that optimally exploit the diversity available in the resulting flat block fading channel. Finally, the two approaches are compared in terms of decoder complexity, maximum achievable diversity advantage, and simulated frame error rate performance in certain representative scenarios.