单载波频域均衡系统的研究

在分析了正交频分复用(OFDM)技术优缺点的基础上提出了单载波频域均衡技术(SC-FDE).SC-FDE系统在保持了OFDM系统性能的同时避免了OFDM的两大问题.接着,在ADS仿真平台上对SC-FDE系统进行了建模和仿真.经过仿真分析得出,通过无线信道后的数据在经过频域均衡模块后可以得到很好的恢复,整个传输模型具有较低的误码率.最后,对OFDM与SC-FDE的误码率曲线就行了对比,证明了SC-FDE所具有的良好性能.

Research on Single Carrier-Frequency Domain Equalization

Based on the analysis of advantages and disadvantages of OFDM (Orthogonal Frequency Division Multiplexing) , SC-FDE (Single Carrier-Frequency Domain Equalization) is introduced. SC-FDE has good performances which OFDM also has, and at the same time SC-FDE avoids the two big problems in OFDM. Then in this paper, an SC-FDE model is created and simulated on the plattform of ADS. Through the simulation, it can be found that the data, which are transmitted through the wireless channel, can be quite good reproduced after they pass the Frequency Domain Equalization modules. And the whole transmission model has a very low bit error ratio. Finally, it is proved by the comparison of the bit error ratio of OFDM and SC-FDE that SC-FDE has nice performances.