On Statistical Properties of Co-channel Interference in OFDM Systems

doi:10.1109/LCOMM.2013.101813.131297

CORC > 北京大学 > 信息科学技术学院

	On Statistical Properties of Co-channel Interference in OFDM Systems
	Feng, Cheng ; Cui, Hongyu ; Ma, Meng ; Jiao, Bingli
刊名	ieee communications letters
	2013
关键词	Co-channel interference orthogonal frequency division multiplexing (OFDM) decoding DOWNLINK NETWORKS
DOI	10.1109/LCOMM.2013.101813.131297
英文摘要	Co-channel interference is a key problem in orthogonal frequency division multiplexing (OFDM) wireless communication systems. Channel coding is an effective means of combating the interference. In order to achieve a good decoding performance, the accurate interference distribution should be known at receiver. In most of the previous studies, the co-channel interference was usually modeled as a Gaussian random variable, however, was found to be inaccurate for OFDM cellular systems recently in few works. In this paper, we study the statistic properties of co-channel interference in wireless OFDM systems. By using Monte Carlo simulation and curve-fitting, non-Gaussian distributions are found to be more accurate than the Gaussian distribution. Based on the derived interference distributions, the log-likelihood ratio (LLR) in a maximum a posteriori (MAP) decoder is calculated to enhance the error correction ability. Simulation results show that a dramatic performance gain can be achieved by using the derived interference distributions compared to the conventional decoder using the Gaussian model.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000329528200031&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Telecommunications; SCI(E); EI; 2; ARTICLE; 12; 2328-2331; 17
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/152221]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Feng, Cheng,Cui, Hongyu,Ma, Meng,et al. On Statistical Properties of Co-channel Interference in OFDM Systems[J]. ieee communications letters,2013.
APA	Feng, Cheng,Cui, Hongyu,Ma, Meng,&Jiao, Bingli.(2013).On Statistical Properties of Co-channel Interference in OFDM Systems.ieee communications letters.
MLA	Feng, Cheng,et al."On Statistical Properties of Co-channel Interference in OFDM Systems".ieee communications letters (2013).