SCMA Codebook Design
Citations
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Additional excerpts
...However, this requires sophisticated codebook design [238]–[240]....
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787 citations
Cites background or methods from "SCMA Codebook Design"
...More details concerning the codebook design can be found in [87]....
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...In contrast to CDMA, SCMA is capable of achieving an extra “shaping gain” due to the optimization of the associated multi-dimensional constellation [87]....
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702 citations
Cites background from "SCMA Codebook Design"
...Therefore, SCMA codewords are designed to be sparse [9]....
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...As reported in [9] the effective size of the codebooks over each non-zero tone can be reduced from 16 to 9....
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...[9] M....
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...In SCMA, these two points are addressed through multi-dimensional codeword design [9]....
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...Therefore, by combining sparsity and low projection techniques, the original complexity of detection is extensively reduced by a factor of 166/93 ~23,014 for this particular scenario [9]....
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References
1,845 citations
"SCMA Codebook Design" refers background in this paper
...The turbo code follows the structure of the long-term evolution (LTE) standard [11]....
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1,474 citations
"SCMA Codebook Design" refers background in this paper
...Keywords—SCMA; OFDMA; LDS; MPA; OOC; factor graph; codebook; multi-dimensional constellation; shaping gain, 5G, LTE....
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...Similar to optical orthogonal codes (OOC) [9], this can be also represented by a binary vector of length indicating the positions of nonzero entries of the codebook....
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1,202 citations
"SCMA Codebook Design" refers background in this paper
...Sparse code multiple access (SCMA) [2] is a multi-dimensional codebook-based non-orthogonal spreading technique which can be seen as a generalization of low density signature (LDS) [3] to address the above requirements....
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1,030 citations
"SCMA Codebook Design" refers background in this paper
...The approach follows the principles of code design for point-to-point communication over fast fading channel [5],[7],[8]....
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...Unitary rotations of QAM latti are optimized in [7] for dimensions 2 to 4 in o the minimum product distance of rotated lattic...
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...Inspiring from code design for communications over fast fading channel [7],[8], a unitary rotation might be designed to maximize the minimum product distance of the constellation....
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925 citations