【作者】 岳光荣； 张骞； 冷梅； 胡剑浩； 李少谦；

【Author】 Yue Guang-rong, Zhang Qian, Leng Mei, Hu Jian-hao, Li Shao-qian (National Key Lab of Communication, UESTC, Chengdu 610054, China)

【机构】 电子科技大学通信抗干扰技术国家级重点实验室；

【摘要】 超宽带通信系统首先要解决的问题是降低系统的功耗和硬件的复杂度,本文研究了一种基于TR技术的超宽带通信系统的简化ADC和AGC设计方法。利用两个并行的比较器完成确保TR超宽带系统性能的2 比特量化,降低了ADC实现的复杂性,同时对ADC和AGC联合设计。仿真的结果表明,本文提出的ADC实现方法和传统的2比特ADC的性能相当,但复杂度降低;在前导序列时间内AGC能完成信号的合理放大, 使之满足信号的接收解调需要,而在信息数据解调期间不用调整AGC的增益。更多还原

【Abstract】 The main challenges for UWB communication system implementation are energy consumption and hardware complexity. A low complexity ADC and AGC sheme is proposed for transmitted reference (TR) LJWB communication in this paper. Two parallel comparators are used to achieve low complexity 2-bit ADC. The simulation results show that the scheme proposed in this paper has the same BER compared with conventional ADC with lower complexity. The jointed optimized design mehod is adopted in ADC and AGC implementation. The AGC module can adjust the received signal at a satisfied level during the preamble section the frame. Thus, the AGC gain is kept constant for the payload of the frame.更多还原