Multi Mode Limited Feedback MIMO Systems
Multi mode MIMO systems vary the number of substreams dynamically based on channel knowledge - this flexibility results in additional transmit diversity. Multi mode precoded systems use quantized channel knowledge to select the number of substreams and the precoding matrix (generalizing the concept of antenna subset selection) and customise the transmission to the eigen structure of the channel. Our results show that substantial gains in diversity is acheived using multi mode precoded MIMO systems with limited feedback.
Related Publications and Preprints:
[1] R. W. Heath, Jr. and D. J. Love, ``Multi-Mode Antenna Selection for Spatial Multiplexing with Linear Receivers,'' IEEE Trans. on Signal Processing, vol. 53, no. 8, part 2, pp. 3042-3056, August 2005.
[2] D. J. Love and R. W. Heath, Jr., ``Multimode Precoding for MIMO Wireless Systems,'' IEEE Trans. on Signal Processing, vol. 53, no. 10, part 1, pp. 3674 - 3687, October 2005.
[3]R. W. Heath, Jr. and D. J. Love, ``Multi-mode Antenna Selection for Spatial Multiplexing Systems with Linear Receivers,'' Proc. of the Allerton Conf. on Comm. Control and Comp., pp. 685-694, Monticello, IL, Oct. 1 - 3, 2003.
[4] R. W. Heath, Jr.and D. J. Love, ``Dual-Mode Antenna Selection for Spatial Multiplexing Systems with Linear Receivers,'' Proc. of the IEEE Asilomar Conf. on Signals, Systems, and Computers, vol. 1, pp. 1085-1089, Pacific Grove, CA, Nov. 9-12, 2003.
[5] D. J. Love and R. W. Heath, Jr., “Multi-Mode Precoding Using Linear Receivers for Limited Feedback MIMO Systems,”delivered to IEEE International Conference on Communications, Paris, France, June 10, 2004.
