Title :
Comb Types Channel Estimation in Multiple Access OFDM System
Author :
Mustafa, Samah AB ; Kadr, Sangar N.
Author_Institution :
Univ. of Salahaddin, Erbil
Abstract :
This work on frequency interleaved multiple access in multi-carrier system. It investigates the performance of Comb Type Pilot Symbol Assist Modulation for mobile reception to mitigate the effect of fast fading Rayleigh channel based on its direct estimation in frequency domain. It has been found from extensive computer simulation with different delay spread and Doppler shift, that linear interpolation has worst performance where the distortion can not be compensated by increasing the signal-to-noise ratio. However, Spline and Low pass interpolator even they add higher complexity to the system, are more efficient to estimate the channel state information and gain SNR over the Linear type.
Keywords :
Doppler shift; OFDM modulation; Rayleigh channels; channel estimation; code division multiple access; mobile computing; Doppler shift; OFDM system; channel estimation; fading Rayleigh channel; mobile reception; multicarrier system; multiple access system; pilot symbol assist modulation; Channel estimation; Computer simulation; Delay; Distortion; Doppler shift; Frequency domain analysis; Frequency estimation; Interpolation; OFDM modulation; Rayleigh channels;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4511017
