Compression of Feedback in Adaptive OFDM-Based Systems using Scheduling
Artikel i vetenskaplig tidskrift, 2007
communication, adaptive modulation and scheduling are promising
techniques for a substantially increased spectral efficiency. To
achieve the throughput gain, it is necessary to feedback channel
quality information. The required feedback rate may be
prohibitively high in many applications, and compression of the
feedback information is normally required.
In this paper, we propose a novel channel quality feedback scheme to
be used in a wireless OFDM system, based on a data compression
approach, and show that the channel information can be compressed by a
factor of 5-30 with virtually no loss of system throughput.