TY - GEN
T1 - Selective mapping for channel inversion precoding in multiple-antenna broadcast systems
AU - Mobasher, Amin
AU - Maddah-Ali, Mohammad Ali
AU - Khandani, Amir K.
PY - 2009
Y1 - 2009
N2 - In this paper, a new Selective Mapping (SLM) technique is introduced for a Multiple-Input Multiple-Output (MIMO) broadcast (or MIMO point-to-point) system with channel inversion. We present a unified framework which links the problem of minimizing the average transmit energy from the constellation point of view, to the sum-rate maximization problem from the capacity viewpoint. First, we consider the point-to-point setup and derive the average transmit energy that can asymptotically be achieved by the proposed SLM technique. It is established that SLM achieves the minimum theoretical average transmit energy achievable by constellation shaping. Then, using the same idea, the average transmit energy in a broadcast system is derived and the relation between this value and the transmission rate is established. Finally, it is shown that the proposed SLM method can achieve the sum-capacity of the MIMO broadcast (or capacity of a MIMO point-to-point) channel at high SNR values.
AB - In this paper, a new Selective Mapping (SLM) technique is introduced for a Multiple-Input Multiple-Output (MIMO) broadcast (or MIMO point-to-point) system with channel inversion. We present a unified framework which links the problem of minimizing the average transmit energy from the constellation point of view, to the sum-rate maximization problem from the capacity viewpoint. First, we consider the point-to-point setup and derive the average transmit energy that can asymptotically be achieved by the proposed SLM technique. It is established that SLM achieves the minimum theoretical average transmit energy achievable by constellation shaping. Then, using the same idea, the average transmit energy in a broadcast system is derived and the relation between this value and the transmission rate is established. Finally, it is shown that the proposed SLM method can achieve the sum-capacity of the MIMO broadcast (or capacity of a MIMO point-to-point) channel at high SNR values.
UR - https://www.scopus.com/pages/publications/70449499121
UR - https://www.scopus.com/inward/citedby.url?scp=70449499121&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2009.5205772
DO - 10.1109/ISIT.2009.5205772
M3 - Conference contribution
AN - SCOPUS:70449499121
SN - 9781424443130
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1679
EP - 1683
BT - 2009 IEEE International Symposium on Information Theory, ISIT 2009
T2 - 2009 IEEE International Symposium on Information Theory, ISIT 2009
Y2 - 28 June 2009 through 3 July 2009
ER -