| 摘要: |
| SOQPSK-TG （Telemetry Group version of Shaped Offset Quadrature Phase Shift Key）具有良好的频率利用率和功率利用率，广泛应用于无线通信系统当中。在连续通信模式下，SOQPSK-TG信号的同步主要采用直接判决算法。为进一步降低算法复杂度，推导了基于线性相位近似的最大似然估计误差鉴别器，理论上分析了算法估计性能，并搭建了简化的接收模型。通过仿真证明了算法在估计性能上优于脉冲幅度调制方法，算法误码率接近理论性能。 |
| 关键词: SOQPSK-TG；连续相位调制 线性相位近似 载波同步 定时同步 |
| DOI： |
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| 基金项目: |
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| SOQPSK-TG signal synchronization based on linear phase approximation |
| WANG Le,LIU Jing |
| (Department of Electronic Engineering,North China University of Technology,Beijing 100144,China) |
| Abstract: |
| Telemetry group version of shaped offset quadrature phase shift key(SOQPSK-TG) is widely applied for the wireless communications systems,due to its high spectrum-efficiency and power-efficiency.In the continuous transmission,the synchronization of SOQPSK-TG signal is mainly based on the direct-decision method.In order to reduce the complexity of the algorithm,the linear phase approximation is used to derive the maximum likelihood discriminator.The theoretical analysis of the performance and the simplified receiving model are also presented.The simulation results show that the proposed algorithm has better performance than the method based on pulse amplitude modulation,and its bit error rate is close to the theoretical bound. |
| Key words: SOQPSK-TG continuous phase modulation linear phase approximation carrier phase synchronization timing synchronization |
《电讯技术》编辑部 