Spatial Modulation Aided Sparse Code-Division Multiple Access

In order to support high-user-load multiple-access (MA), we propose a non-orthogonal MA scheme based on a beneficial amalgam of spatial modulation (SM) and sparse code-division multiple-access (SCDMA), which is termed the SM-SCDMA. Hence, SM-SCDMA inherits both the merits of SM with single radio-fre...

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Bibliographic Details
Published in:IEEE transactions on wireless communications Vol. 17; no. 3; pp. 1474 - 1487
Main Authors: Yusha Liu, Lie-Liang Yang, Hanzo, Lajos
Format: Journal Article
Language:English
Published: IEEE 01.03.2018
Subjects:
Bit error rate
CDMA
Detectors
low density signature
maximum a posteriori detection
maximum-likelihood detection
message passing algorithm
Multiaccess communication
NOMA
performance analysis
Receiving antennas
Signal to noise ratio
spatial modulation
Transmitters
ISSN:1536-1276
Online Access:Get full text
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Summary:In order to support high-user-load multiple-access (MA), we propose a non-orthogonal MA scheme based on a beneficial amalgam of spatial modulation (SM) and sparse code-division multiple-access (SCDMA), which is termed the SM-SCDMA. Hence, SM-SCDMA inherits both the merits of SM with single radio-frequency MIMO transceiver implementation and the advantages of SCDMA relying on low-complexity signal detection. In this paper, we evaluate the potential of SM-SCDMA as well as its low-complexity near-optimum signal detection. Given these objectives, we consider both the maximum likelihood detection and the message passing algorithm aided detection (MPAD) that is derived based on the maximum a posteriori principles. In order to evaluate the performance of large SM-SCDMA without relying on time-consuming simulations, we propose new approaches for analyzing the performance of SM-SCDMA systems. A range of formulas that are valid in the signal-to-noise ratio region of practical interest are derived. Finally, the performance of SM-SCDMA systems is investigated by addressing diverse design concerns. Our studies and performance results show that SM-SCDMA constitutes a promising MA scheme for the future ultra dense systems. Assisted by the MPAD, it is capable of supporting high-user-load MA transmission associated with a normalized user-load factor of two.
ISSN:1536-1276
DOI:10.1109/TWC.2017.2778722