Blind separation of synchronous co-channel digital signals using anantenna array. I. Algorithms
Talwar, S.
Viberg, M.
Paulraj, A.
Sci. Comput. & Comput. Math. Program, Stanford Univ., CA;
This paper appears in: Signal Processing, IEEE Transactions on
Publication Date: May 1996
Volume: 44,
Issue: 5
On page(s): 1184-1197
ISSN: 1053-587X
References Cited: 34
CODEN: ITPRED
INSPEC Accession Number: 5290114
Digital Object Identifier: 10.1109/78.502331
Current Version Published: 2002-08-06
Abstract
We propose a maximum-likelihood (ML) approach for separating and
estimating multiple synchronous digital signals arriving at an antenna
array at a cell site. The spatial response of the array is assumed to be
known imprecisely or unknown. We exploit the finite alphabet property of
digital signals to simultaneously estimate the array response and the
symbol sequence for each signal. Uniqueness of the estimates is
established for BPSK signals. We introduce a signal detection technique
based on the finite alphabet property that is different from a standard
linear combiner. Computationally efficient algorithms for both block and
recursive estimation of the signals are presented. This new approach is
applicable to an unknown array geometry and propagation environment,
which is particularly useful In wireless communication systems.
Simulation results demonstrate its promising performance
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
