Title :
On MMSE real-time antenna array processing using fourth-order statistics in the US cellular TDMA system
Author :
Martone, Massimiliano Max
Author_Institution :
Telecommun. Group, Watkins-Johnson Co., Palo Alto, CA, USA
Abstract :
The antenna array processing problem in the reverse link of the current US digital cellular communication system is studied and higher than second-order statistics (HOS) baseband processing is proposed as a possible candidate solution. The approach, based on the minimization of the mean squared error using fourth-order cumulants alone, is non-blind because the knowledge of the synchronization sequences of the IS-136 system is fully exploited. A recursive total least squares algorithm is used in the adaptive implementation to mitigate the effects of high error variance in the estimates of the cumulants based on sample-statistics. The method is very effective in a fast fading environment and strong cochannel interference
Keywords :
adaptive antenna arrays; array signal processing; cellular radio; cochannel interference; digital radio; fading; higher order statistics; least mean squares methods; time division multiple access; HOS; IS-136 system; MMSE; TDMA system; USA; adaptive implementation; antenna array processing; baseband processing; cellular radio; digital cellular communication system; fast fading environment; fourth-order cumulants; fourth-order statistics; higher-order statistics; minimization of the mean squared error; real-time processing; recursive total least squares algorithm; reverse link; sample-statistics; strong cochannel interference; synchronization sequences; Array signal processing; Baseband; Deconvolution; Digital filters; Mobile antennas; Signal processing algorithms; Statistics; Time division multiple access; Transmitters; Transmitting antennas;
Conference_Titel :
Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-4788-9
DOI :
10.1109/ICC.1998.683086
