SCMA Codebook Design
arXiv:1408.3653 · doi:10.1109/VTCFall.2014.6966170
Abstract
Multicarrier CDMA is a multiple access scheme in which modulated QAM symbols are spread over OFDMA tones by using a generally complex spreading sequence. Effectively, a QAM symbol is repeated over multiple tones. Low density signature (LDS) is a version of CDMA with low density spreading sequences allowing us to take advantage of a near optimal message passing algorithm (MPA) receiver with practically feasible complexity. Sparse code multiple access (SCMA) is a multi-dimensional codebook-based non-orthogonal spreading technique. In SCMA, the procedure of bit to QAM symbol mapping and spreading are combined together and incoming bits are directly mapped to multi-dimensional codewords of SCMA codebook sets. Each layer has its dedicated codebook. Shaping gain of a multi-dimensional constellation is one of the main sources of the performance improvement in comparison to the simple repetition of QAM symbols in LDS. Meanwhile, like LDS, SCMA enjoys the low complexity reception techniques due to the sparsity of SCMA codewords. In this paper a systematic approach is proposed to design SCMA codebooks mainly based on the design principles of lattice constellations. Simulation results are presented to show the performance gain of SCMA compared to LDS and OFDMA.
Accepted for IEEE VTC-fall 2014
Cited by in corpus (42)
- Massive Machine-type Communications in 5G: Physical and MAC-layer solutions
- A Mathematical Proof of the Superiority of NOMA Compared to Conventional OMA
- SCMA for Downlink Multiple Access of 5G Wireless Networks
- Low Complexity Iterative Receiver Design for Sparse Code Multiple Access
- Fairness and Sum-Rate Maximization via Joint Channel and Power Allocation in Uplink SCMA Networks
- Downlink SCMA Codebook Design with Low Error Rate by Maximizing Minimum Euclidean Distance of Superimposed Codewords
- SCMA Codebook Design Based on Uniquely Decomposable Constellation Groups
- Reconfigurable Intelligent Surface Optimization for Uplink Sparse Code Multiple Access
- Modeling and Analysis of SCMA Enhanced D2D and Cellular Hybrid Network
- Enabling Sphere Decoding for SCMA
- Low-Cost Uplink Sparse Code Multiple Access for Spatial Modulation
- A Multistage Method for SCMA Codebook Design Based on MDS Codes
- Non-Orthogonal Multiple Access for 5G and Beyond
- Sparse or Dense: A Comparative Study of Code-Domain NOMA Systems
- Quantum Speedup of the Dispersion and Codebook Design Problems
- TCM-NOMA: Joint Multi-user Codeword Design and Detection in Trellis Coded Modulation based NOMA for Beyond 5G
- Access-based Lightweight Physical Layer Authentication for the Internet of Things Devices
- Low Complexity Receiver for Uplink SCMA System via Expectation Propagation
- Signature Design of Sparsely Spread CDMA Based on Superposed Constellation Distance Analysis
- Iterative detection and decoding for SCMA systems with LDPC codes
- A Tutorial to Sparse Code Multiple Access
- Modulation and Multiple Access for 5G Networks
- Sparse Layered MIMO with Iterative Detection
- Joint Multi-User Communication and Sensing Exploiting Both Signal and Environment Sparsity
- SCMA with Low Complexity Symmetric Codebook Design for Visible Light Communication
- A Novel Deep Neural Network Based Approach for Sparse Code Multiple Access
- Resource Management optimally in Non-Orthogonal Multiple Access Networks for fifth-generation by using game-theoretic
- Message-Passing Receiver Design for Joint Channel Estimation and Data Decoding in Uplink Grant-Free SCMA Systems
- Analyzing Uplink Grant-free Sparse Code Multiple Access System in Massive IoT Networks
- SBMA: A Multiple Access Scheme Combining SCMA and BIA for MU-MISO
- Deep Learning-Based Active User Detection for Grant-free SCMA Systems
- Design of Power-Imbalanced SCMA Codebook
- Codeword Position Index based Sparse Code Multiple Access System
- Hybrid Codeword Position Index Modulation for Sparse Code Multiple Access System
- Simplified Multiuser Detection for SCMA with Sum-Product Algorithm
- SCMA Spectral and Energy Efficiency with QoS
- An Efficient Code-Domain NOMA Transceiver for mm-Wave Hybrid Massive MIMO Architectures
- Sparse Signatures with Forward Error Correction Coding for Non-Orthogonal Massive Access
- A Novel Spectrally-Efficient Uplink Hybrid-Domain NOMA System
- Deep Learning-based Codebook Design for Code-domain Non-Orthogonal Multiple Access Approaching Single-User Bit Error Rate Performance
- Locally Diverse Constellations from the Special Orthogonal Group
- Asynchronous Massive Access and Neighbor Discovery Using OFDMA