Title :
A phase noise compensation scheme for OFDM wireless systems
Author :
Zou, Q. ; Tarighat, A. ; Khajehnouri, N. ; Sayed, A.H.
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
Phase noise causes significant degradation in the performance of Orthogonal Frequency Division Multiplexing (OFDM) based wireless communication systems. In the proposed compensation scheme, the communication between the transmitter and receiver blocks consists of two stages. In the first stage, block-type pilot symbols are transmitted and the channel coefficients are jointly estimated with the phase noise in the time domain. In the second stage, comb-type OFDM symbols are transmitted such that the receiver can jointly estimate the data symbols and the phase noise. It is shown by computer simulations that the proposed scheme can effectively mitigate the inter-carrier interference caused by phase noise and improve the bit error rate of OFDM systems.
Keywords :
OFDM modulation; channel estimation; compensation; error statistics; phase noise; radio receivers; radio transmitters; radiofrequency interference; wireless channels; OFDM wireless systems; bit error rate improvement; block-type pilot symbol transmission; channel coefficient estimation; comb-type OFDM symbol transmission; computer simulations; data symbol estimation; intercarrier interference mitigation; orthogonal frequency division multiplexing based wireless communication systems; phase noise compensation scheme; receiver blocks; transmitter blocks; Abstracts; Degradation; Interference; Noise; OFDM; Oscillators; Wireless communication;
Conference_Titel :
Signal Processing Conference, 2006 14th European
Conference_Location :
Florence
