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Srikant, R. Wu, Xinzhou 2015-09-25T20:08:43Z 2015-09-25T20:08:43Z 10000-01-01 2004 2004 In the other case when B is large, it is not reasonable to assume any form of CSI. Thus, we consider noncoherent fading channels and characterize the reliability function in the low-SNR regime. Further, by allowing multiple transmit and receive antennas, we study the impact of multiple antennas on the fundamental tradeoff between communication rate and probability of decoding error. For the case when the fading matrix H has independent entries, we show that the number of transmit antennas plays a key role in reducing the peakiness in the optimal input signaling. Further, by considering a correlated channel model, we show that the maximum performance gain (in terms of the error exponent and communication rate) is achieved when the entries of the channel fading matrix are fully correlated. Made available in DSpace on 2015-09-25T20:08:43Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3160977.pdf: 8396987 bytes, checksum: 61d678f58031c0cf581d4941a67e1ba0 (MD5) Previous issue date: 2004 Embargo set by: Seth Robbins for item 82180 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 138 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004. http://hdl.handle.net/2142/80898 (MiAaPQ)AAI3160977 eng Engineering, Electronics and Electrical Wireless Communications in the Energy -Limited Regime text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.