Uniquely Decodable Codes with Fast Decoder for Overloaded Synchronous CDMA Systems

Mashayekhi Omid; Marvasti Farokh

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Uniquely Decodable Codes with Fast Decoder for Overloaded Synchronous CDMA Systems

机译：具有快速解码器的独特可解码代码，用于过载同步CDMA系统

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In this paper, we introduce a new class of signature matrices for overloaded synchronous CDMA systems that have a very low complexity decoder. While overloaded systems are more efficient from the bandwidth point of view, the Maximum Likelihood (ML) implementation for decoding is impractical even for moderate dimensions. Simulation results show that the performance of the proposed decoder is very close to that of the ML decoder. Indeed, the proposed decoding scheme needs neither multiplication nor addition and requires only a few comparisons . Furthermore, the computational complexity and the probability of error vs. Signal to Noise Ratios (SNR) are derived analytically.

机译：在本文中，我们为过载同步CDMA系统引入了一种新型的签名矩阵，该系统具有非常低的复杂度解码器。从带宽的角度来看，虽然过载的系统效率更高，但即使对于中等尺寸的解码，最大似然（ML）实现也不可行。仿真结果表明，所提出的解码器性能与ML解码器非常接近。实际上，提出的解码方案既不需要乘法也不需要加法，并且仅需要一些比较。此外，分析得出了计算复杂度和错误概率与信噪比（SNR）的关系。

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《Communications, IEEE Transactions on》 |2012年第11期|p.3145-3149|共5页
作者
Mashayekhi Omid; Marvasti Farokh;
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作者单位

Advanced Communications Research Institute (ACRI) and the Department of Electrical Engineering, Sharif University of Technology, Tehran, Iran. Currently, he is a graduate student in the Electrical Engineering Department, Stanford University, Stanford, California 94305, USA;

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正文语种 eng
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关键词
Coding; bit-error rate (BER); code division multiple access (CDMA); computational complexity; fast decoding; overloaded codes; uniquely decodable codes;

机译：编码;误码率（BER）;码分多址（CDMA）;计算复杂度;快速解码;重载代码;唯一可解码的代码;

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专利

1. Set of uniquely decodable codes for overloaded synchronous CDMA [J] . Amiya Singh, Arash Amini, Poonam Singh, Communications, IET . 2016,第10期

机译：过载同步CDMA的唯一可解码代码集
2. Iterative reduced-complexity multiuser detection based on Chase decoding for synchronous turbo-coded CDMA system [J] . Zhiliang Qin, Kah Chan Teh IEEE Journal on Selected Areas in Communications . 2006,第1期

机译：同步Turbo编码CDMA系统中基于Chase解码的迭代式复杂度降低的多用户检测
3. A NOVEL CHIRP-CODED EN/DECODER FOR COHERENT 2D TIME-WAVELENGTH OCDMA SYSTEMS [J] . Jilin Zheng, Rong Wang, Tao Pu, Microwave and optical technology letters . 2010,第5期

机译：相干二维时波长OCDMA系统的新型Chirp编码EN /解码器
4. Uniquely decodable codes for overloaded synchronous CDMA with two sets of orthogonal signatures [C] . Singh A., Singh P. Annual IEEE India Conference . 2014

机译：具有两组正交签名的过载同步CDMA的唯一可解码代码
5. Map decoding of linear block codes, iterative decoding of Reed-Solomon codes and interactive concatenated turbo coding systems. [D] . Liu, Ye. 1999

机译：线性分组码的映射解码，里德-所罗门码的迭代解码和交互式串联Turbo编码系统。
6. Fast and Flexible Multi-Step Cloth Manipulation Planning Using an Encode-Manipulate-Decode Network (EM*D Net) [O] . Solvi Arnold, Kimitoshi Yamazaki 2019

机译：使用编码-操纵-解码网络（EM * D Net）的快速灵活的多步布操纵计划
7. Fast Decoder for Overloaded Uniquely Decodable Synchronous Optical CDMA [O] . Michel Kulhandjian, Hovannes Kulhandjian, Claude DAmours, 2019

机译：用于过载的独特可解码同步光CDMA的快速解码器
8. SIMULATION OF PARALLEL SEQUENTIAL DECODING (Convolution encoder and modified sequential decoder enable communication system to extract reliable information from data transmitted over a noisy link) [R] . J. G. Dodds 1974

机译：并行序列解码的仿真（卷积编码器和改进的顺序解码器使通信系统能够从通过噪声链路传输的数据中提取可靠信息）

Uniquely Decodable Codes with Fast Decoder for Overloaded Synchronous CDMA Systems

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