NDLI: Wireless MIMO Systems in Fading Environments: A Stabilizing Transmission Approach

Content Provider	IEEE Xplore Digital Library
Author	Dian-Wu Yue Zhang, K.Q.T.
Copyright Year	2012
Abstract	In this paper, we investigate adaptive transmission for multiple-input multiple-output (MIMO) antenna systems with multi-beams in fading environments when the channel-state information at both the transmitter and the receiver is available. In Rayleigh fading environments, the transmitter is supposed to be capable of spatiotemporal subchannel selection and power control as eigenvalues of channel matrix changes. Under constraints of individual bit error rate (BER) and maximum transmit power for each data stream, we adopt the optimal transmit strategy of minimizing the average transmit power (ATP), and focus on the case where all of these individual BER constraints are of short term. With the help of an order statistical result of the eigenvalues of complex central Wishart matrices, we derive and give closed-form ATP expressions. Due to short term BER constraints, adaptive transmission based on channel eigenvalues can keep BER reliability of MIMO system unchanged almost without outage, just working in additive white Gaussian noise environments. When the maximum transmit power is allowed to be infinite, we analyze deeply relationship among the ATP, the numbers of transmit and receive antennas. Finally, some numerical results are provided to validate the theoretical analysis and make comparisons with the corresponding adaptive transmit scheme under long term BER constraints. Our simulation results show that the adaptive transmit scheme of short term is attractive for the future MIMO applications, especially when a very large MIMO system is employed.
Starting Page	1
Ending Page	8
File Size	184712
Page Count	8
File Format	PDF
ISBN	9781612846842
ISSN	21619654
e-ISBN	9781612846835
DOI	10.1109/WiCOM.2012.6478742
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Adaptive systems Bit error rate Power control MIMO Eigenvalues and eigenfunctions Signal to noise ratio
Content Type	Text
Resource Type	Article

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