摘要
本文给出了一种适用于软件无线电的突发模式非相干GMSK接收机。该接收机可以在很短的前导字序列内完成载波和符号同步,采用线性近似的非相干检测算法来对非线性的GMSK信号实现解调。该接收机采用前馈结构实现快速同步,同时具有较低的计算复杂度和相对优越的性能,适合于在线性软件无线电接收机平台上实现。通过仿真给出了该接收机与几种典型GMSK接收机的性能比较,并且在实际软件无线电平台上得到验证。
A burst mode non-coherent GMSK receiver for software radio is proposed. According to this receiver, the symbol timing error and the frequency offset can be acquired from a short preamble. A linearized non-coherent demodulator is used to process the nonlinear GMSK signals. Its demodulator can be used to achieve fast synchronization with feed forward loops. Compared with typical non-coherent GMSK receivers, the proposed receiver has better performance and less complexity. Therefore, it is easier to be implemented, especially on a software radio platform. The last part of this paper is contributed to the comparison of performance between the proposed receiver and conventional non-coherent receivers via computer simulation. The proposed receiver has been successfully testified on our software radio platform.
出处
《电路与系统学报》
CSCD
2003年第5期127-131,共5页
Journal of Circuits and Systems
