Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Limited feedback design for MIMO broadcast channels with ARQ mechanism
IEEE Transactions on Wireless Communications
Secured communication over frequency-selective fading channels: a practical vandermonde precoding
EURASIP Journal on Wireless Communications and Networking - Special issue on wireless physical layer security
Achievable throughput of multi-mode multiuser MIMO with imperfect CSI constraints
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Throughput of precoded broadcast transmission with noisy feedback
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Effect of transmit correlation on the sum-rate capacity of two-user broadcast channels
IEEE Transactions on Communications
Block diagonalization in the MIMO broadcast channel with delayed CSIT
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Exploiting connections between MIMO MMSE achievable rate and MIMO mutual information
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A user grouping method for maximum weighted sum capacity gain
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Sum rates and user scheduling for multi-user MIMO vector perturbation precoding
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
On the robustness of dirty paper coding
IEEE Transactions on Communications
Achievable sum rate of MIMO MMSE receivers: a general analytic framework
IEEE Transactions on Information Theory
Distributed antenna system capacity scaling
IEEE Wireless Communications
The geometry of the MIMO broadcast channel rate region under linear filtering at high SNR
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Weighted sum rate maximization in the MIMO MAC with linear transceivers: asymptotic results
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Wireless Personal Communications: An International Journal
| Hi-index | 754.90 |
In this correspondence, we compare the achievable throughput for the optimal strategy of dirty paper coding (DPC) to that achieved with suboptimal and lower complexity linear precoding techniques (zero-forcing and block diagonalization). Both strategies utilize all available spatial dimensions and therefore have the same multiplexing gain, but an absolute difference in terms of throughput does exist. The sum rate difference between the two strategies is analytically computed at asymptotically high SNR. Furthermore, the difference is not affected by asymmetric channel behavior when each user has a different average SNR. Weighted sum rate maximization is also considered. In the process, it is shown that allocating user powers in direct proportion to user weights asymptotically maximizes weighted sum rate.