A Space-time Diversity Scheme for Interference Alignment in Uplink Cellular Systems

2015 ◽  
Vol 12 (16) ◽  
pp. 6177-6185
Author(s):  
Jinbo Zhang
Keyword(s):  
Interference Alignment ◽  
Space Time ◽  
Cellular Systems ◽  
Time Diversity ◽  
Diversity Scheme

Boosted space-time diversity scheme for wireless communications

2009 ◽  
Vol 45 (16) ◽  
pp. 843 ◽  
Author(s):  
M. Krasicki ◽  
P. Szulakiewicz
Keyword(s):  
Wireless Communications ◽  
Space Time ◽  
Time Diversity ◽  
Diversity Scheme

A Novel HARQ for Space-Time Diversity in MIMO System

2010 ◽  
Vol 32 (4) ◽  
pp. 794-798
Author(s):  
De-sheng Wang ◽  
Hong-zi Lin ◽  
Guang-xi Zhu
Keyword(s):  
Mimo System ◽  
Space Time ◽  
Time Diversity

scholarly journals Queue-Aware Opportunistic Interference Alignment in Downlink MU-MIMO Cellular Systems

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 50860-50874
Author(s):  
A. M. Benaya ◽  
Maha Elsabrouty ◽  
Osamu Muta
Keyword(s):  
Interference Alignment ◽  
Cellular Systems

Joint Angular and Time Diversity of Multi-Antenna CDMA Systems in Wireless Fading Channels

2011 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Feng She ◽  
Hsiao Hwa Chen ◽  
Hongyang Li
Keyword(s):  
Fading Channels ◽  
Performance Improvement ◽  
Multipath Fading ◽  
Antenna System ◽  
Space Time ◽  
Diversity Gain ◽  
Multipath Fading Channel ◽  
Time Diversity ◽  
Time Domains ◽  
Code Division Multiple

In this paper, a multi-antenna based receiver structure for direct sequence code division multiple access (DS/CDMA) system is proposed. The proposed scheme exploits the excellent time resolution of a CDMA RAKE receiver and uses an antenna array beamforming structure to resolve multipath returns in both angular and time domains. A much higher diversity gain than that based only on the time domain diversity can be achieved. This work suggests a new space-time diversity paradigm, namely angular-time diversity, which differs from traditional Alamouti-type space-time coded schemes. The impairments caused by multipath and multiuser interference are analyzed. The performance of the proposed receiver in multipath fading channel is explicitly evaluated. An expression for uncoded system bit error probability is derived. Simulation results show the performance improvement in terms of BER due to the use of multi-antenna in the receiver, and the results illustrate that the multi-antenna based receiver works effectively in resolving multipaths in both angular and time domains to achieve performance improvement due to angular and time diversity gain provided by the multi-antenna system.

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