Title :
Pilot assisted coherent DS-CDMA reverse-link communications with optimal robust channel estimation
Author_Institution :
Cellular Infrastructure Group, Motorola Inc., Arlington Heights, IL, USA
Abstract :
Optimal pilot assisted estimation of communication channels is considered for coherent cellular and PCS CDMA reverse link communications. Both pilot symbol and pilot channel based schemes are described and the optimal estimators for these two schemes are analyzed. Relative mean square estimation error (RMSEE) and optimal power allocation between data and pilot signals are derived based on the analysis. Finally, simulation results are given to show the reverse link performance can be significantly improved by using the pilot assisted coherent communication instead of non-coherent schemes for the CDMA reverse link
Keywords :
cellular radio; code division multiple access; estimation theory; personal communication networks; pseudonoise codes; spread spectrum communication; telecommunication channels; PCS CDMA; cellular CDMA; communication channels; noncoherent schemes; optimal estimators; optimal power allocation; optimal robust channel estimation; pilot assisted coherent DS-CDMA reverse-link communications; pilot channel based schemes; pilot symbol based schemes; relative mean square estimation error; reverse link performance; Channel estimation; Communication channels; Demodulation; Estimation error; Interference; Mobile communication; Multiaccess communication; Personal communication networks; Robustness; Signal analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.599619
