| 递归SOQPSK-TG信号的两状态判决反馈解调算法 |
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| 引用本文： | 孙锦华,韩会梅. 递归SOQPSK-TG信号的两状态判决反馈解调算法[J]. 通信学报, 2014, 35(7): 7-62. DOI: 10.3969/j.issn.1000-436x.2014.07.007 |
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| 作者姓名： | 孙锦华 韩会梅 |
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| 作者单位： | 西安电子科技大学 综合业务网理论及关键技术国家重点实验室，陕西 西安 710071 |
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| 基金项目： | 国家自然科学基金资助项目(60902039, 61271175)；中央高校基本科研业务费专项基金资助项目(JB140114, K5051201043) |
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| 摘 要： | 针对利用两状态网格图对递归部分响应成形偏移正交相移键控SOQPSK-TG信号进行解调时，网格图状态变量与累积相位不存在一一对应关系的问题，研究了解决此问题的判决反馈解调算法。该算法根据两状态网格图，在网格状态转移过程中，通过判决反馈，得到状态变量对应的累积相位。仿真结果表明，在信噪比大于0 dB时，SOQPSK-TG信号两状态判决反馈解调算法可以获得接近四状态解调的误比特性能。
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| 关 键 词： | 成形偏移正交相移键控；递归；判决反馈；解调 |
| 收稿时间： | 2013-08-02 |
Decision feedback demodulation algorithmfor recursive SOQPSK-TG signal |
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| UNJin-hua S,ANHui-mei H. Decision feedback demodulation algorithmfor recursive SOQPSK-TG signal[J]. Journal on Communications, 2014, 35(7): 7-62. DOI: 10.3969/j.issn.1000-436x.2014.07.007 |
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| Authors: | UNJin-hua S ANHui-mei H |
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| Affiliation: | State Key Laboratory of Integrated Service Networks, Xidian University, Xi'an 710071, China |
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| Abstract: | To solve the problem of one-to-one correspondence relationship not existing between state variable and cumulative phase in two-state trellis of shaped-offset quadrature phase-shift keying(SOQPSK-TG), a decision feedback demodulation algorithm for recursive SOQPSK-TG is researched. According to a two-state trellis , cumulative phase corresponding to the state variable is obtained by decision feedback in state transition. Simulation results show that at ,the decision feedback demodulation algorithm can achieve a BER performance which is very close to four-state demodulation algorithm performance. |
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| Keywords: | shaped offset quadrature phase-shift keying recursive decision feedback demodulation |
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