DocumentCode :
3353508
Title :
A new tracking loop for direct sequence spread spectrum systems on frequency-selective fading channels
Author :
Sheen, Wern-Ho ; Stüber, Gordon L.
Author_Institution :
Nat. Chung Chen Univ., Taiwan
Volume :
3
fYear :
1995
fDate :
18-22 Jun 1995
Firstpage :
1364
Abstract :
A new tracking loop is proposed for direct-sequence spread-spectrum signaling on a frequency-selective fading channel. By exploiting the inherent multipath diversity of the channel, the new tracking loop overwhelmingly outperforms the traditional noncoherent delay-locked loop (DLL) for all cases under consideration. Linear and nonlinear methods are employed to analyze the new tracking loop with perfect channel estimation. The performance degradation caused by imperfect channel estimation is determined by computer simulations. Over a range of signal-to-noise-ratios (SNRs) of practical interest, the simulation results show that the degradation is less than 2 dB
Keywords :
diversity reception; fading; multipath channels; pseudonoise codes; spread spectrum communication; tracking; DS-SS signaling; SNR; computer simulations; direct sequence spread spectrum systems; frequency selective fading channels; imperfect channel estimation; linear methods; multipath diversity; nonlinear methods; perfect channel estimation; performance degradation; signal-to-noise-ratios; tracking loop; AWGN; Additive white noise; Autocorrelation; Degradation; Delay estimation; Fading; Frequency; Optical signal processing; Spread spectrum communication; Tracking loops;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
Type :
conf
DOI :
10.1109/ICC.1995.524427
Filename :
524427
Link To Document :
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