IEEE Journal on Selected Areas in Communications - Special issue on wireless and pervasive communications for healthcare
Iterative channel and data estimation: framework and analysis via replica method
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Practical signaling with vanishing pilot-energy for large noncoherent block-fading MIMO channels
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
A new signaling scheme for large DS-CDMA channels without CSI
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
On asymptotic performance of iterative channel and data estimation in large DS-CDMA systems
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
How much training is needed for iterative multiuser detection and decoding
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Asymptotic mutual information for Rician MIMO-MA channels with arbitrary inputs: a replica analysis
IEEE Transactions on Communications
IEEE Journal on Selected Areas in Communications - Special issue on cooperative communications in MIMO cellular networks
Performance analysis of MIMO cellular network with channel estimation errors
IEEE Transactions on Wireless Communications
| Hi-index | 0.07 |
We analyze decoupling structures of MIMO DS-CDMA channels with general multiuser detector front ends, using the replica method, in order to compare the space-time spreading (STS) and time spreading (TS) schemes. In the many- user limit, a MIMO DS-CDMA channel with the STS scheme is decoupled into a bank of single-user SIMO channels. On the other hand, a MIMO DS-CDMA channel with the TS scheme is decoupled into a bank of single-user MIMO channels. In view of performance, the STS scheme outperforms the TS scheme in the fast fading situation if transmit spatial correlations exist. In terms of complexity, the STS scheme does not require any space-time coding. On the other hand, the TS scheme does require space-time coding in order to achieve comparable performance to the STS scheme. The STS scheme improves the performance of communications and reduces the complexity of transmitter and receiver architectures.