A Dynamic Phase-Frequency Recovery for Power Reduction in OFDM Systems

2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT) Pub Date : 2007-04-25 DOI:10.1109/VDAT.2007.373222

Mei-Hui Yang, J. Yu, Juinn-Ting Chen, Chen-Yi Lee

引用次数: 3

Abstract

A dynamic phase and frequency recovery (DPR & DFR) is proposed for power reduction and performance improvement. By the DPR, signal sampling rate is reduced from Nyquist rate (or higher) to the symbol rate, resulting in reduced ADC circuit power. By the DFR, data is recovered from less-interfered signals. In the MB-OFDM UWB system, the simulations show that the system improves 2.3 dB SNR and reduce 43.75% ADC power consumption with the proposed techniques.

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一种用于OFDM系统功率降低的动态相位-频率恢复方法

为了降低功率和提高性能，提出了一种动态相位和频率恢复(DPR & DFR)方法。通过DPR，信号采样率从奈奎斯特速率(或更高)降低到符号速率，从而降低ADC电路功率。通过DFR，数据从干扰较小的信号中恢复。在MB-OFDM UWB系统中，仿真结果表明，采用该技术，系统的信噪比提高了2.3 dB, ADC功耗降低了43.75%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2007 International Symposium on VLSI Design, Automation and Test (VLSI-DAT)

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