Title :
On Throughput of MIMO-OFDM Systems with Joint Iterative Channel Estimation and Multiuser Detection under Different Multiple Access Schemes
Author :
Rossi, Pierluigi Salvo
Author_Institution :
Dept. of Inf. Eng., Second Univ. of Naples, Aversa, Italy
fDate :
8/1/2011 12:00:00 AM
Abstract :
In this letter we compare the throughput performance of multiuser MIMO-OFDM systems operating in time-variant scenarios. The system employes packet-based transmissions and the receiver is twofold-iterative implementing multiuser detection, channel estimation and soft single-user decoding. Different combinations in terms of multiple-access techniques (time division, frequency division, and space division) and modulation schemes (BPSK and QPSK) are compared. Large-size constellations with interfering users in space-division multiple access (SDMA) are preferable in high-SNR range.
Keywords :
MIMO communication; OFDM modulation; channel estimation; iterative decoding; multiuser detection; quadrature phase shift keying; radio receivers; space division multiple access; BPSK modulation; MIMO-OFDM system; QPSK modulation; SDMA; joint iterative channel estimation; multiple access technique; packet-based transmission; receiver; soft single-user decoding; space division multiple access; time-variant scenarios; twofold-iterative implementing multiuser detection; Channel estimation; Multiaccess communication; Multiuser detection; OFDM; Receivers; Signal to noise ratio; Throughput; Channel estimation; MIMO-OFDM systems; iterative receivers; multiuser detection; throughput performance;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.060811.110714
