The Role of Channel Distribution Information for Interference Management and Network Performance Enhancement
Abstract
One of the key technologies proposed for next generation commercial and military communications systems is the use of multiple antennas at both the transmitting and receiving nodes of the network. The additional antenna elements provide degrees of freedom that can provide spatial filtering, spatial multiplexing and diversity gain. These advances can be applied to increase link gain, provide interference management, mitigate hostile jammers and facilitate multi-packet reception. In this project we defined how the channel statistics can be utilized in place of the instantaneous channel state information to limit the amount of power that must be transmitted between nodes to improve overall network performance by maintaining stable beam forming vectors over the time scales defined by channel distribution information rather than the reduced time scale associated with the channel coherence time. With CDI, one can only guarantee quality of service for a specified outage probability. This creates a tradeoff that can be beneficial to the overall network. Closed form expressions for the outage probabilities were derived and given those expressions, algorithms were derived that minimize the weighted sum power in the network for a specified outage probability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 03, 2010
- Accession Number
- ADA547017
Entities
People
- James R. Zeidler
- Sagnik Ghosh
Organizations
- University of California, San Diego