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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - On the design of multiuser codebooks for uplink SCMA systems
AU - Bao, J.
AU - Ma, Z.
AU - Ding, Z.
AU - Karagiannidis, G. K.
AU - Zhu, Z.
N1 - ©2016 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Sparse code multiple access (SCMA) is a promising uplink multiple access technique that can achieve superior spectral efficiency, provided that multidimensional codebooks are carefully designed. In this letter, we investigate the multiuser codebook design for SCMA systems over Rayleigh fading channels. The criterion of the proposed design is derived from the cutoff rate analysis of the equivalent multiple-input multiple-output system. Furthermore, new codebooks with signal-space diversity are suggested, while simulations show that this criterion is efficient in developing codebooks with substantial performance improvement, compared with the existing ones.
AB - Sparse code multiple access (SCMA) is a promising uplink multiple access technique that can achieve superior spectral efficiency, provided that multidimensional codebooks are carefully designed. In this letter, we investigate the multiuser codebook design for SCMA systems over Rayleigh fading channels. The criterion of the proposed design is derived from the cutoff rate analysis of the equivalent multiple-input multiple-output system. Furthermore, new codebooks with signal-space diversity are suggested, while simulations show that this criterion is efficient in developing codebooks with substantial performance improvement, compared with the existing ones.
KW - MIMO communication
KW - Rayleigh channels
KW - channel coding
KW - diversity reception
KW - multi-access systems
KW - multiuser channels
KW - Rayleigh fading channel
KW - equivalent multiple input multiple output system cutoff rate analysis
KW - multidimensional codebook
KW - multiuser codebook design
KW - signal-space diversity
KW - sparse code multiple access
KW - spectral efficiency
KW - uplink SCMA system
KW - uplink multiple access technique
KW - Constellation diagram
KW - Fading channels
KW - MIMO
KW - Manganese
KW - Mutual information
KW - Optimization
KW - Uplink
KW - Sparse code multiple access (SCMA)
KW - cutoff rate
KW - multidimensional constellations
U2 - 10.1109/LCOMM.2016.2596759
DO - 10.1109/LCOMM.2016.2596759
M3 - Journal article
VL - 20
SP - 1920
EP - 1923
JO - IEEE Communications Letters
JF - IEEE Communications Letters
SN - 1089-7798
IS - 10
ER -