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

Author

Yang, Mei-Hui ; Yu, Jui-Yuan ; Chen, Juinn-Ting ; Lee, Chen-Yi

Author_Institution

Nat. Chiao-Tung Univ., Hsinchu

fYear

2007

fDate

25-27 April 2007

Firstpage

1

Lastpage

4

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.

Keywords

OFDM modulation; signal sampling; ultra wideband communication; ADC circuit power; MB-OFDM UWB system; Nyquist rate; OFDM systems; dynamic phase-frequency recovery; high-speed wireless communication systems; orthogonal frequency division multiplexing; power reduction; signal sampling rate; symbol rate; AWGN; Circuits; Clocks; Energy consumption; Frequency synchronization; Interpolation; OFDM; Optimized production technology; Sampling methods; Signal generators; OFDM; phase-frequency recovery;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Conference_Location

Hsinchu

Print_ISBN

1-4244-0583-1

Electronic_ISBN

1-4244-0583-1

Type

conf

DOI

10.1109/VDAT.2007.373222

Filename

4239414