Symbol Error Performance Analysis of OFDM Relaying System with Subcarrier Mapping Scheme

Author

Chen, Shaohua ; Liu, Fang ; Zhang, Xin ; Xiong, Cong ; Yang, Dacheng

Author_Institution

Wireless Theor. & Technol. Lab. (WT&T), Beijing Univ. of Posts, Beijing, China

Volume

14

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

638

Lastpage

640

Abstract

This letter presents a study on statistical and symbol error performance analysis of the two-hop orthogonal frequency division multiplexing (OFDM) relay link with amplify-and-forward (AF) protocol and subcarrier mapping (SCM) scheme. Closed-form expressions for probability density function (PDF) and symbol error probability (SEP) of the signal-to-noise ratio (SNR) for the kth mapped subcarrier pair link (k-MSPL) are provided. Our asymptotic SEP analysis reveals that the traditional SCM which can maximize the capacity can not improve the average SEP for uncoded OFDM system, however the average SEP can be decreased significantly by dropping several worst links.

Keywords

OFDM modulation; error statistics; protocols; subcarrier multiplexing; OFDM relaying system; amplify-and-forward protocol; probability density function; signal-to-noise ratio; subcarrier mapping scheme; symbol error probability performance analysis; two-hop orthogonal frequency division multiplexing; Broadband communication; Closed-form solution; Error probability; Fading; OFDM; Performance analysis; Probability density function; Protocols; Relays; Signal to noise ratio; Upper bound; Wireless communication; OFDM relay; subcarrier mapping; symbol error probability (SEP);

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.07.092499

Filename

5545615