The effect of sampling jitter in OFDM systems

Author

Manoj, K.N. ; Thiagarajan, Ganesan

Author_Institution

Broadband Silicon Technol. Centre, Texas Instruments India Ltd., Bangalore, India

Volume

3

fYear

2003

fDate

11-15 May 2003

Firstpage

2061

Abstract

In this paper we study the effect of random jitter in the sampling circuit at the receiver in an OFDM communication system. We show that the effect of jitter can be looked at as interference between different sub-carriers and derive a lower bound for the variance of the interference in terms of the eigenvalues of the covariance matrix of the jitter process. We compare the results with simulation results. We describe the effect of oversampling on the interference, and provide an explanation for the way interference varies with sub-carrier index for different sampling rates.

Keywords

OFDM modulation; covariance matrices; eigenvalues and eigenfunctions; jitter; radio receivers; radiofrequency interference; signal sampling; wireless LAN; HIPERLAN/2; OFDM communication system; covariance matrix eigenvalues; high data-rate communication systems; local area network; orthogonal frequency division multiplexing; oversampling effect; radio receiver; random jitter; sampling circuit; sampling rates; subcarrier index; subcarrier interference; wireless LAN; Circuits; Clocks; Instruments; Interference; Jitter; OFDM; Phase locked loops; Phase noise; Sampling methods; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1203983

Filename

1203983