The finite-length multi-input multi-output MMSE-DFE

• Published in: IEEE transactions on signal processing Vol. 48; no. 10; pp. 2921 - 2936
• Main Authors: Al-Dhahir, N., Sayed, A.H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.2000; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Antennas; Applied sciences; Base stations; Computation; Crosstalk; Decision analysis; Detection, estimation, filtering, equalization, prediction; Dispersion; Equalizers; Error analysis; Exact sciences and technology; Finite impulse response filter; Information, signal and communications theory; Intersymbol interference; Mathematical analysis; MIMO; Multiuser detection; Parallel processing; Receiving antennas; Signal and communications theory; Signal processing; Signal, noise; Telecommunications and information theory; Transmitting antennas; Performance evaluation; MIMO system; Digital filter; Multichannel detection; Signal processing; Finite impulse response filter; Fast algorithm; Equalization; Mean square error
• ISSN: 1053-587X; 1941-0476
• DOI: 10.1109/78.869048

A new theoretical framework is introduced for analyzing the performance of a finite length minimum-mean-square error decision feedback equalizer (MMSE-DFE) in a multi-input multi-output (MIMO) environment. The framework includes transmit and receive diversity systems as special cases and quantifies the diversity performance improvement as a function of the number of transmit/receive antennas and equalizer taps. Fast and parallelizable algorithms for computing the finite-length MIMO MMSE-DFE are presented for three common multi-user detection scenarios.