NDLI: On Noncoherent MIMO Channels in the Wideband Regime: Capacity and Reliability

Content Provider	IEEE Xplore Digital Library
Author	Ray, S. Medard, M. Lizhong Zheng
Copyright Year	1963
Abstract	We consider a multiple-input multiple-output (MIMO) wideband Rayleigh block-fading channel where the channel state is unknown to both the transmitter and the receiver and there is only an average power constraint on the input. We compute the capacity and analyze its dependence on coherence length, number of antennas and receive signal-to-noise ratio (SNR) per degree of freedom. We establish conditions on the coherence length and number of antennas for the noncoherent channel to have a "near-coherent" performance in the wideband regime. We also propose a signaling scheme that is near-capacity achieving in this regime. We compute the error probability for this wideband noncoherent MIMO channel and study its dependence on SNR, number of transmit and receive antennas and coherence length. We show that error probability decays inversely with coherence length and exponentially with the product of the number of transmit and receive antennas. Moreover, channel outage dominates error probability in the wideband regime. We also show that the critical as well as cutoff rates are much smaller than channel capacity in this regime
Sponsorship	IEEE Information Theory Society
Starting Page	1983
Ending Page	2009
Page Count	27
File Size	659940
File Format	PDF
ISSN	00189448
Volume Number	53
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Wideband Bandwidth Signal to noise ratio Rayleigh channels Receiving antennas Broadband antennas Error probability Information theory AWGN wideband channels Energy efficiency low signal-to-noise ratio (SNR) multiple-input multiple-output (MIMO) noncoherent
Content Type	Text
Resource Type	Article
Subject	Library and Information Sciences Information Systems Computer Science Applications

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