Cumulant-based inverse filter criteria for MIMO blind deconvolution: Properties, algorithms, and application to DS/CDMA systems in multipath

Chi, CY Chen, CH

Cy. Chi et Ch. Chen, Cumulant-based inverse filter criteria for MIMO blind deconvolution: Properties, algorithms, and application to DS/CDMA systems in multipath, IEEE SIGNAL, 49(7), 2001, pp. 1282-1299

37

INGLESE

Article

Eletrical & Eletronics Engineeing

IEEE TRANSACTIONS ON SIGNAL PROCESSING

1053-587X → ACNP

49

7

2001

1282 - 1299

ISI

1053-587X(200107)49:7<1282:CIFCFM>2.0.ZU;2-J

Tugnait and Chi and Chen proposed multi-input multi-output inverse filter c riteria (MIMO-IFC) using higher order statistics for blind deconvolution of MIMO linear time-invariant systems, This paper proposes three properties o n the performance of the MIMO linear equalizer associated with MIMO-IFC for any signal-to-noise ratio, including pi) perfect phase equalization proper ty, P2) a relation to MIMO minimum mean square error (MIMO-MMSE) equalizer, and P3) a connection with the one obtained by MIMO super-exponential algor ithm (MIMO-SEA) that usually converges fast but does not guarantee converge nce for finite data. Based on P2), a fast algorithm for computing the theor etically optimum MIMO equalizer is proposed. Moreover, based on P3), a fast MIMO-IFC based algorithm with performance similar to that of the MIMO-SEA and with guaranteed convergence is proposed as well as its application to s uppression of multiple access interference and intersymbol interference (IS I) for multiuser asynchronous DS/CDMA systems in multipath, Finally, some s imulation results are presented to support the analytic results and the pro posed algorithms.