Bandwidth optimised wireless distributed streaming from multiple terminals

Data streaming from multiple base stations over wireless fading channels to a mobile client is an attractive setup, particularly suitable for real-time multimedia applications. Base stations placed within a short range of one other result in a high level of interference, multipath fading, and noise effects, One classical solution to reduce those effects is to employ the well-known spread spectrum technique; however, this leads to a substantial increase in the required bandwidth, which is usually not acceptable for real-time wireless video communications. In this paper we provide a novel spreading scheme based on complete complementary codes that reduces the required bandwidth by exploiting correlation among video source information present at different base stations without any performance penalty. We consider both the situation when the same source content and correlated sources are streamed from two base stations. Results obtained show a reduction in transmission rate of almost 2 Mchip/second with minimal loss in reconstructed source quality.

Bandwidth optimised wireless distributed streaming from multiple terminals Conference Paper