【摘要】 为了克服SC-FDMA(single carrier frequency division multiple access)系统恶劣的传输环境,提出了基于SC-FDMA系统的频域均衡技术用来克服多径衰落、提高系统的传输性能。分别对线性均衡和判决反馈均衡在不同的信道和不同的子载波映射方式下的性能进行了分析比较。仿真结果表明,频域均衡技术对于集中式子载波映射(LFDMA)的效果优于插入式子载波映射(IFDMA),在PedestrianA信道和VehicularA信道下,判决反馈均衡的性能明显的优于线性均衡,能够在一定程度上提高系统性能。更多还原

【Abstract】 To overcome the harsh environment in SC-FDMA communication systems,the frequency domain equalization based on SC-FDMA system to overcome the multi-path fading and improve system performance is presented.The performance of linear equalization and decision feedback equalization with two different sub-carrier mappings under two different channel will be analyzed and compared.The simulation results show that the performance of LFDMA is better than IFDMA in SC-FDMA system.And no matter in Pedestrian A and Vehicular A channel,decision feedback equalization is better than linear equalization,the performance of SC-FDMA system is greatly improved.更多还原