Title :
On the diversity and complexity of Zero Forcing receivers for MIMO Zero Padded systems
Author :
Rao, B.S.M.R. ; Hari, K.V.S.
Author_Institution :
Interdiscipl. Centre on Security, Reliability & Trust, Univ. of Luxembourg, Luxembourg City, Luxembourg
Abstract :
Zero padded systems with linear receivers are shown to be robust and amenable to fast implementations in single antenna scenarios. In this paper, properties of such systems are investigated when multiple antennas are present at both ends of the communication link. In particular, their diversity and complexity are evaluated for precoded transmissions. The linear receivers are shown to exploit multipath and receive diversities, even in the absence of any coding at the transmitter. Use of additional redundancy to improve performance is considered and the effect of transmission rate on diversity order is analyzed. Low complexity implementations of Zero Forcing receivers are devised to further enhance their applicability.
Keywords :
MIMO communication; computational complexity; diversity reception; precoding; radio receivers; MIMO zero padded systems; block processing systems; communication link; precoded transmissions; zero forcing receivers; Bit error rate; Complexity theory; MIMO; OFDM; Receivers; Redundancy; Transmitters;
Conference_Titel :
Signal Processing and Communications (SPCOM), 2010 International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-7137-9
DOI :
10.1109/SPCOM.2010.5560518