Low SNR Capacity of Fading Channels with Peak and Average Power Constraints

Details Low SNR Capacity of Fading Channels with Peak and Average Power Constraints Low SNR Capacity of Fading Channels with Peak and Average Power Constraints

2006-04-11

arxiv.org/abs/cs/0604049v2

Computer Science

Information Theory

13 pages, version without proofs submitted to ISIT 2006

Scientific paper

Flat-fading channels that are correlated in time are considered under peak and average power constraints. For discrete-time channels, a new upper bound on the capacity per unit time is derived. A low SNR analysis of a full-scattering vector channel is used to derive a complimentary lower bound. Together, these bounds allow us to identify the exact scaling of channel capacity for a fixed peak to average ratio, as the average power converges to zero. The upper bound is also asymptotically tight as the average power converges to zero for a fixed peak power. For a continuous time infinite bandwidth channel, Viterbi identified the capacity for M-FSK modulation. Recently, Zhang and Laneman showed that the capacity can be achieved with non-bursty signaling (QPSK). An additional contribution of this paper is to obtain similar results under peak and average power constraints.

Affiliated with

Also associated with

No associations

Rating

Low SNR Capacity of Fading Channels with Peak and Average Power Constraints does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low SNR Capacity of Fading Channels with Peak and Average Power Constraints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low SNR Capacity of Fading Channels with Peak and Average Power Constraints will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-225245