Dirty Paper Coding for Fading Channels with Partial Transmitter Side Information

Computer Science – Information Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

5 pages with 2 figures, presented at 42nd Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, USA, Oct. 200

Scientific paper

The problem of Dirty Paper Coding (DPC) over the Fading Dirty Paper Channel (FDPC) Y = H(X + S)+Z, a more general version of Costa's channel, is studied for the case in which there is partial and perfect knowledge of the fading process H at the transmitter (CSIT) and the receiver (CSIR), respectively. A key step in this problem is to determine the optimal inflation factor (under Costa's choice of auxiliary random variable) when there is only partial CSIT. Towards this end, two iterative numerical algorithms are proposed. Both of these algorithms are seen to yield a good choice for the inflation factor. Finally, the high-SNR (signal-to-noise ratio) behavior of the achievable rate over the FDPC is dealt with. It is proved that FDPC (with t transmit and r receive antennas) achieves the largest possible scaling factor of min(t,r) log SNR even with no CSIT. Furthermore, in the high SNR regime, the optimality of Costa's choice of auxiliary random variable is established even when there is partial (or no) CSIT in the special case of FDPC with t <= r. Using the high-SNR scaling-law result of the FDPC (mentioned before), it is shown that a DPC-based multi-user transmission strategy, unlike other beamforming-based multi-user strategies, can achieve a single-user sum-rate scaling factor over the multiple-input multiple-output Gaussian Broadcast Channel with partial (or no) CSIT.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dirty Paper Coding for Fading Channels with Partial Transmitter Side Information 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 Dirty Paper Coding for Fading Channels with Partial Transmitter Side Information, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dirty Paper Coding for Fading Channels with Partial Transmitter Side Information will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-566282

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.