Title :
Interference cancellation for improved channel estimation in array processing MLSE receivers
Author :
Bottomley, Gregory E. ; Molnar, Karl J.
Author_Institution :
Ericsson Inc., Research Triangle Park, NC, USA
Abstract :
Array processing techniques provide significant gains in performance for digital cellular communications systems. While array processing has the potential of mitigating severe co-channel interference, performance is limited by the need to estimate the channel of the desired signal. In this paper, practical approaches for improving channel estimation in the presence of interference are proposed. Simulation of these approaches for the IS-136 TDMA cellular system demonstrate that improved channel estimation can provide gains in C/I as high as 8 dB at 1% BER
Keywords :
array signal processing; cellular radio; cochannel interference; digital radio; interference suppression; land mobile radio; maximum likelihood estimation; radio receivers; radiofrequency interference; sequential estimation; telecommunication channels; time division multiple access; BER; IS-136 TDMA cellular system; array processing MLSE receivers; channel estimation; co-channel interference; digital cellular communications systems; interference cancellation; performance; Array signal processing; Channel estimation; Interchannel interference; Interference cancellation; Least squares approximation; Maximum likelihood estimation; Performance gain; Receiving antennas; Signal processing; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.596335
