Paper Info
Title
ON THE IMPACT OF MULTI-ANTENNA RF TRANSCEIVERS' AMPLITUDE AND PHASE MISMATCHES ON TRANSMIT MRC
Abstract
Transmit Maximum-Ratio Combining (transmit MRC) is a popu- lar antenna diversity technique that provides both spatial diversity and array gain in downlink Multiple-Input Single-Output (MISO) links. These gains, however, critically depend on the availability of the downlink Channel State Information (CSI). In time-division duplexing systems, channel reciprocity has been commonly put forth to justify the convenient use of the CSI already acquired from the uplink, in the calculation of the transmit-MRC weights. Recent work has questioned this practice, based on the non-reciprocity of multi-antenna RF transceivers, due to significant amplitude and phase mismatches across the antennas. Furthermore, expensive digital calibration solutions have been proposed to enforce the reci- procity of the multi-antenna RF transceivers. Both the impact of multi-antenna amplitude and phase mismatches and the perfor- mance of the proposed calibration approaches have only been as- sessed via simulations. In this contribution, we propose an alterna- tive statistical analysis of the impact of these mismatches on trans- mit MRC. This analysis allows a faster and more reliable charac- terization as well as provides insight into the relative importance of these mismatches. Consequently, sufficient matching require- ments can be extracted for the multi-antenna RF transceivers, for which simpler and cheaper calibration solutions can be devised.
Year
DOI
Venue
2005
10.1109/ICASSP.2005.1416153
ICASSP (4)
Keywords
Field
DocType
spatial diversity,time division multiplexing,calibration,radio frequency,transceivers,statistical analysis,channel state information,antenna diversity,degradation,downlink,array gain,maximum ratio combining
Antenna diversity,Mathematical optimization,Telecommunications,Computer science,Maximal-ratio combining,Radio frequency,Electronic engineering,Array gain,Time-division multiplexing,Duplex (telecommunications),Telecommunications link,Channel state information
Conference
Citations 
PageRank 
References 
8
0.76
1
Authors
6
Name
Order
Citations
PageRank
Nadia Khaled136119.78
Sumanth Jagannathan28212.07
Ahmad Bahai360265.90
frederik petre480.76
G. Leus54344307.24
Hugo De Man62177257.77