Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations

Details Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations

2009-12-17

arxiv.org/abs/0912.3323v2

Computer Science

Information Theory

Submitted to IEEE Communications Letters (9 pages, 1 figure, revised). Uses IEEEtran.cls V1.7a

Scientific paper

In the multiuser downlink, power allocation for linear precoders that minimize the sum of mean squared errors under a sum power constraint is a non-convex problem. Many existing algorithms solve an equivalent convex problem in the virtual uplink and apply a transformation based on uplink-downlink duality to find a downlink solution. In this letter, we analyze the optimality criteria for the power allocation subproblem in the virtual uplink, and demonstrate that the optimal solution leads to identical power allocations in the downlink and virtual uplink. We thus extend the known duality results and, importantly, simplify the existing algorithms used for iterative transceiver design.

Affiliated with

Also associated with

No associations

Rating

Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations 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 Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minimizing Sum-MSE Implies Identical Downlink and Dual Uplink Power Allocations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-685132