Loading [a11y]/accessibility-menu.js
Lexicographic Relay Selection and Channel Allocation for Multichannel Cooperative Multicast | IEEE Conference Publication | IEEE Xplore

Lexicographic Relay Selection and Channel Allocation for Multichannel Cooperative Multicast


Abstract:

Cooperative multicast has been demonstrated to achieve significant performance gain over the classic source-destination transmission paradigm by exploiting spatial divers...Show More

Abstract:

Cooperative multicast has been demonstrated to achieve significant performance gain over the classic source-destination transmission paradigm by exploiting spatial diversity through the participation of multiple relay nodes. As a major technical challenge, the selection of relays for a multicast session has significant impact on the multicast performance. The challenge is even more pronounced when the number of channels are limited as the relay selection is in this context coupled with channel allocation. We establish an analytical framework for joint relay selection and channel allocation problem and develop a lexicographic max-min multicast relay selection scheme. Our design consists of two technical steps. 1) We consider the maximization of the minimal data rate. By decoupling relay selection and channel allocation, the problem is transformed to a max-min-max problem, which is difficult to solve. To make this problem tractable, we reformulate it as a convex optimization problem via relaxation and smoothing, and prove the asymptotic equivalence from a geometrical perspective. 2) We propose an adjustment algorithm based on the initial max-min solution, and prove that the proposed scheme achieves lexicographic optimality.
Date of Conference: 19-22 March 2017
Date Added to IEEE Xplore: 11 May 2017
ISBN Information:
Electronic ISSN: 1558-2612
Conference Location: San Francisco, CA, USA

References

References is not available for this document.