| 广义正交码索引调制系统的性能分析 |
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| 引用本文： | 卞李娜,冯会真,金小萍,楼维中,瞿崇晓.广义正交码索引调制系统的性能分析[J].电信科学,2022,38(8):120-128. |
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| 作者姓名： | 卞李娜 冯会真 金小萍 楼维中 瞿崇晓 |
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| 作者单位： | 1. 中国计量大学信息工程学院，浙江省电磁波信息技术与计量检测重点实验室，浙江 杭州 310018;2. 中国电子科技集团公司第五十二研究所，浙江 杭州 310018 |
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| 基金项目： | 浙江省自然科学基金资助项目(LY17F010012);浙江省教育厅科研资助项目(Y201840047);国家级大学生创新创业训练计划项目(202110356016);未来网络科研基金项目(FNSRFP-2021-YB-11) |
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| 摘 要： | 摘 要：为了提高码索引调制（code index modulation，CIM）系统的传输效率，提出了一种具有更低复杂度的单输入单输出（single input single output，SISO）的广义正交码索引调制（generalized orthogonal code index modulation，GQCIM）系统。CIM 系统使用扩频码和星座符号传输信息，但只能激活两个扩频码索引和一个调制符号。而 GQCIM 系统以一种新颖的方式克服了只激活一个调制符号的限制，同时充分利用了调制符号的正交性，增加扩频码索引以传输更多的额外信息位，提高了系统的传输效率。此外，分析了GQCIM系统的理论性能，推导了误码率性能的上界。通过蒙特卡罗仿真验证了GQCIM系统的性能，对比发现GQCIM系统的理论和仿真性能一致。而且在相同的传输效率下，结果显示GQCIM系统的性能优于同样具有正交性的调制系统，如广义码索引调制（generalized code index modulation，GCIM）系统、CIM系统、码索引调制-正交空间调制（code index modulation aided quadrature spatial modulation，CIM-QSM）系统、码索引调制-正交空间调制（code index modulation aided spatial modulation，CIM-SM）系统、脉冲索引调制（pulse index modulation，PIM）系统。
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| 关 键 词： | 广义正交码索引调制 码索引调制 平均成对错误概率 传输效率 |
Performance analysis of generalized orthogonal code index modulation system |
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| Lina BIAN,Huizhen FENG,Xiaoping JIN,Weizhong LOU,Chongxiao QU.Performance analysis of generalized orthogonal code index modulation system[J].Telecommunications Science,2022,38(8):120-128. |
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| Authors: | Lina BIAN Huizhen FENG Xiaoping JIN Weizhong LOU Chongxiao QU |
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| Affiliation: | 1. Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, China;2. The 52nd Research Institute of China Electronics Technology Group Corporation, Hangzhou 310018, China |
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| Abstract: | In order to improve the transmission efficiency of the code index modulation (CIM) system, a generalized orthogonal code index modulation (GQCIM) system with lower complexity was proposed, which was a single input single output (SISO) system.CIM system used spreading codes and constellation symbols to transmit information, but only activated two spreading code indexes and one modulation symbol.GQCIM system overcame the limitation of only activating one modulation symbol at a time in a novel way, at the same time, made full use of the orthogonality of modulation symbols, increased the spreading code index to transmit more additional information bits, and improved the transmission efficiency of the system.In addition, the theoretical performance of GQCIM system was analyzed and derived the upper bound of bit error rate performance.Then the performance of GQCIM was verified by Monte Carlo simulation, and the theoretical and simulation performance of GQCIM system was found to be consistent.And under the same transmission efficiency, the results show that the performance of GQCIM system is better than the same orthogonal modulation system, such as generalized code index modulation (GCIM) system, CIM system, code index modulation aided quadrature spatial modulation (CIM-QSM) system, code index modulation aided spatial modulation (CIM-SM) system, pulse index modulation (PIM) system. |
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| Keywords: | generalized orthogonal code index modulation code index modulation average pairwise error probabil-ity transmission rate |
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