Conference Paper

Feedback Compression for Correlated Broadcast Channels

TU Delft, Delft
DOI: 10.1109/SCVT.2007.4436258 Conference: Communications and Vehicular Technology in the Benelux, 2007 14th IEEE Symposium on
Source: IEEE Xplore

ABSTRACT In this paper we apply predictive vector quantization (PVQ) to quantize time-correlated broadcast channels. PVQ exploits the time-correlation of the channel to reduce the quantization error of the channels, and thus to improve the sum rate of the system. PVQ predicts the actual channel based on a number of previous channels, and then quantizes the difference between the prediction and the true channel. In this paper we show how the corresponding codebooks can be designed, and we present a prediction strategy. The performance of PVQ for a broadcast system is depicted through numerical simulations.

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