摘要
针对数字化脉冲无线电接收机的高复杂度和模拟数字转换器件的高要求,提出一种单比特采样量化的脉冲无线电接收机频域线性均衡方法.该方法在接收端采取频域线性均衡,降低接收机复杂度,同时有效地消除符号间干扰.最后,通过数学推导给出其均衡性能的闭式表达式.性能分析和仿真结果均表明,频域线性均衡方法在高速脉冲无线电系统中能够有效地消除多径干扰和收集多径能量,进而消除符号间干扰,较大地提升了单比特量化接收机的系统性能.
Digital implementation of impulse radio receivers is highly complex,and requires analog to digital convertors to operate at an extremely high speed.A better method for frequency domain linear equalization was proposed,which was based on single-bit quantization.Because of linear processing,and frequency domain equalizing the receiver effectively reduces the complexity and inter-symbol interference.The closed-form expression of the performance that employed the frequency domain linear equalizer was also given.Simulation and performance analysis show that the proposed method maintains a good performance with an easy implementation in dense multipath environments.
基金
国家自然科学基金(60802008)
中国高技术研究发展(863)计划(2007AA01Z2B2)资助
关键词
单比特量化采样
脉冲无线电
频域均衡器
single-bit quantization
impulse radio
frequency domain equalizer
