摘要
同步实现对于OFDM基带接收系统而言至关重要,对于面向移动多媒体的基带芯片设计,同步的性能和低功耗设计更是很大的挑战。结合中国移动多媒体广播系统(CMMB)帧结构、调制及其传输信道的特征,提出了适用于多径衰落信道、高载波频偏环境下的OFDM系统时间和载波频率同步方案,并在硬件实现中从算法优化、硬件构架设计两个方面进一步降低同步功耗。
Implementation of synchronization is very important in OFDM receiver baseband systems. For design of baseband chips facing mobile multimedia, synchronization performance and low power are challenge in the design. A robust scheme of timing and frequency synchronization in CMMB system adapted for multi-path fading and high carrier frequency offset environment is presented in this paper. For the implementation of the hardware, the paper will reduce synchronization power in two aspects, algorithm optimization and hardware structure.
出处
《电子技术应用》
北大核心
2009年第2期104-107,共4页
Application of Electronic Technique
