Effect of feedback delay and channel gain difference on distributed transmit diversity without receiver phase compensation

2016 ◽  
Author(s):  
Sahar Amini ◽  
Dong-jun Na ◽  
Kwonhue Choi
Keyword(s):  
Transmit Diversity ◽  
Channel Gain ◽  
Feedback Delay ◽  
Phase Compensation

scholarly journals Analysis of Distributed Transmit Diversity with Outdated Diversity Weights

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Sahar Amini ◽  
Kwonhue Choi ◽  
Dongjun Na
Keyword(s):  
Cooperative Communications ◽  
Transmit Diversity ◽  
Average Error ◽  
Receiver Side ◽  
Feedback Delay ◽  
Phase Compensation ◽  
Spatially Correlated ◽  
Diversity Techniques ◽  
Average Error Rate ◽  
5G Systems

Distributed transmit diversity (DTD) technique that combines cooperative communications and diversity techniques is a suitable solution in 5th-generation (5G) systems. In this paper, we investigate the effect of receiver phase compensation (RPC) on the performance of DTD. We introduce new expressions for the average error rate of DTD in the presence of RPC. The derived expressions are useful for a large number of modulation schemes. We obtain further insights by comparing the RPC effect on DTD with different spatially correlated collocated transmit diversity (CTD). The new observations include the following: (1) In the case of feedback delay, the phase compensation (PC) is required on the receiver side in addition to the transmitter side. (2) In DTD with RPC, the system performance is improved by increasing the differences between the channel gain variances. However, this is the opposite of the case of DTD without RPC. (3) The correlated CTD is more sensitive to RPC than DTD. This sensitivity increases by enhancing the correlation between transmit (TX) antennas. (4) In the case where there is no delay for CTD or DTD, RPC does not affect the system’s performance.

Power allocation in a transmit diversity system with mean channel gain information

2005 ◽  
Vol 9 (7) ◽  
pp. 616-618 ◽  
Author(s):  
Jianghong Luo ◽  
R.S. Blum ◽  
L. Cimini ◽  
L. Greenstein ◽  
A. Haimovich
Keyword(s):  
Power Allocation ◽  
Transmit Diversity ◽  
Channel Gain

Performance analysis of closed-loop transmit diversity in the presence of feedback delay

2001 ◽  
Vol 49 (9) ◽  
pp. 1618-1630 ◽  
Author(s):  
E.N. Onggosanusi ◽  
A. Gatherer ◽  
A.G. Dabak ◽  
S. Hosur
Keyword(s):  
Performance Analysis ◽  
Closed Loop ◽  
Transmit Diversity ◽  
Feedback Delay

Generalized full/partial closed loop transmit diversity algorithm for WCDMA

2003 ◽  
Vol 14 (5) ◽  
pp. 471-477
Author(s):  
Dejan M. Novakovic ◽  
Markku J. Juntti ◽  
Miroslav L. Dukic
Keyword(s):  
Closed Loop ◽  
Transmit Diversity

Effects of feedback delay on eye-hand synchronism in steering behavior

1969 ◽  
Author(s):  
Patrick Coleman ◽  
Connie Ruff ◽  
Karl U. Smith
Keyword(s):  
Feedback Delay ◽  
Effects Of Feedback
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