Title :
Blind estimation of PN code in multipath fading direct sequence spread spectrum systems
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Abstract :
A combination method is presented to estimate the unknown pseudo-noise (PN) spreading sequence for direct sequence spreading spectrum (DS-SS) signals in frequency selective fading channel. Performance of traditional blind estimator based on eigenanalysis techniques shows significant performance degradation when directly employed in multipath fading environment. Borrowing blind channel estimation and equalization ideas, we provide two methods to mitigate the effect of channel-induced distortion. Eigenanalysis method is then exploited to estimate the PN code. Some illustrative simulations are presented for the combined method and the experimental results are analyzed.
Keywords :
blind equalisers; channel estimation; eigenvalues and eigenfunctions; fading channels; pseudonoise codes; spread spectrum communication; blind channel equalization; blind channel estimation; blind estimation; combination method; eigenanalysis techniques; frequency selective fading channel; multipath fading direct sequence spread spectrum systems; pseudo-noise code; pseudo-noise spreading sequence; Analytical models; Blind equalizers; Degradation; Fading; Filters; Frequency estimation; Information science; Multiaccess communication; Multipath channels; Spread spectrum communication; Blind Estimation; Eigenanalysis; Multipath; PN Sequence;
Conference_Titel :
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2250-0
Electronic_ISBN :
978-1-4244-2251-7
DOI :
10.1109/ICCT.2008.4716203
