Title :
Joint Iterative Time-Variant Channel Estimation and Multi-User Detection for MIMO-OFDM Systems
Author :
Rossi, Pierluigi Salvo ; Müller, Ralf R.
Author_Institution :
Norwegian Univ. of Sci. & Technol., Trondheim
Abstract :
This paper presents an iterative receiver for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The receiver performs channel estimation and multi-user detection, with soft information iteratively provided by the single-user decoders. Time- variance is effectively taken into account exploiting the properties of the discrete prolate spheroidal (DPS) sequences. Simulation results for the performance are presented in terms of bit error rate (BER) vs signal-to-noise ratio (SNR), showing how the single-user bound (SUB) is approached in a few iterations.
Keywords :
channel estimation; error statistics; multiuser detection; radio receivers; MIMO system; OFDM system; bit error rate; channel estimation; discrete prolate spheroidal sequences; iterative receiver; multiple-input multiple-output system; multiuser detection; orthogonal frequency division multiplexing system; signal-to-noise ratio; single-user decoder; Bit error rate; Channel estimation; Frequency conversion; Iterative decoding; MIMO; Multiuser detection; OFDM; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.811
