Title :
Design considerations for the compensation of phase noise in OFDM systems
Author :
Zhang, Yi ; Feng, Xiaodong ; He, Guanghui ; Ma, Jun
Author_Institution :
Sch. of Microelectron., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Orthogonal frequency division multiplexing (OFDM) has been widely used in wireless communication systems for the advantage of mitigating inter-symbol interference caused by multi-path propagation. However, OFDM based wireless communication systems, such as the ultra-wideband (UWB) system, suffer performance degradations caused by phase noise distortion. The phase noise distortion introduces two effects: common phase error (CPE) and inter-carrier interference (ICI). In this paper, the VLSI architecture for phase noise compensation based on decision feedback algorithm using MMSE equalization is investigated. Particularly, the finite word length effect specific to the architecture is analyzed considering the tradeoff between the performance and the hardware complexity.
Keywords :
OFDM modulation; VLSI; decision feedback equalisers; interference suppression; intersymbol interference; least mean squares methods; phase noise; ultra wideband communication; VLSI architecture; common phase error; decision feedback algorithm; hardware complexity; interference mitigation; intersymbol interference; minimum mean square error equalization; multipath propagation; orthogonal frequency division multiplexing; phase noise distortion; wireless communication; Decision feedback equalizers; Degradation; Interference; OFDM; Performance analysis; Phase distortion; Phase noise; Ultra wideband technology; Very large scale integration; Wireless communication; OFDM; VLSI; decision feedback; phase noise;
Conference_Titel :
SoC Design Conference (ISOCC), 2009 International
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5034-3
Electronic_ISBN :
978-1-4244-5035-0
DOI :
10.1109/SOCDC.2009.5423799
