Diversity and Degrees of Freedom of Cooperative Wireless Networks

Details Diversity and Degrees of Freedom of Cooperative Wireless Networks Diversity and Degrees of Freedom of Cooperative Wireless Networks

2008-02-13

arxiv.org/abs/0802.1893v1

Computer Science

Information Theory

Submitted to International Symposium on Information Theory (ISIT), 2008

Scientific paper

Wireless fading networks with multiple antennas are typically studied information-theoretically from two different perspectives - the outage characterization and the ergodic capacity characterization. A key parameter in the outage characterization of a network is the diversity, whereas a first-order indicator for the ergodic capacity is the degrees of freedom (DOF), which is the pre-log coefficient in the capacity expression. In this paper, we present max-flow min-cut type theorems for computing both the diversity and the degrees of freedom of arbitrary single-source single-sink multi-antenna networks. We also show that an amplify-and-forward protocol is sufficient to achieve this. The degrees of freedom characterization is obtained using a conversion to a deterministic wireless network for which the capacity was recently found. We show that the diversity result easily extends to multi-source multi-sink networks and evaluate the DOF for multi-casting in single-source multi-sink networks.

Affiliated with

Also associated with

No associations

Rating

Diversity and Degrees of Freedom of Cooperative Wireless Networks 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 Diversity and Degrees of Freedom of Cooperative Wireless Networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diversity and Degrees of Freedom of Cooperative Wireless Networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-681813