Deliberately Designed Asynchronous Transmission Scheme for MIMO Systems

Oversampling at each receive antenna is equivalent to having multiple polyphase components with correlated channel gains and colored noise, provided that the signal bandwidth is higher than Nyquist bandwidth. To exploit the potential of these polyphase components in the MIMO systems, this letter adv...

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Bibliographic Details
Published inIEEE signal processing letters Vol. 14; no. 12; pp. 920 - 923
Main Authors Qixing Wang, Qixing Wang, Yongyu Chang, Yongyu Chang, Dacheng Yang, Dacheng Yang
Format Journal Article
LanguageEnglish
Published New York IEEE 01.12.2007
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antennas
Asynchronous transmission
Bandwidth
Channels
Colored noise
Delay
Diversity methods
Energy consumption
Equivalence
Frequency domain analysis
frequency domain equalizers
Gain
Matched filters
MIMO
MIMO systems
oversampling
Power consumption
Receiving antennas
Simulation
Synchronous
Transmitting antennas
MIMO systems
frequency domain equalizers
Asynchronous transmission
oversampling
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Summary:Oversampling at each receive antenna is equivalent to having multiple polyphase components with correlated channel gains and colored noise, provided that the signal bandwidth is higher than Nyquist bandwidth. To exploit the potential of these polyphase components in the MIMO systems, this letter advocates the approach of using deliberately designed asynchronous transmission instead of the synchronous transmission usually employed. Simulations show that the asynchronous transmission can easily outperform its synchronous counterparts. Moreover, it opens up the possibility of using fewer antennas at the receiver, particularly in a subscriber unit where there are severe constraints on size, weight, and power consumption.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2007.906234