Power Allocation for Multi-Point Joint Transmission with Different Node Activeness
Paper in proceeding, 2013
We study the power allocation problem for the downlink of a cooperative system with different node activeness, i.e., each receiving node requests for data transmission according to a certain probability. Data symbols of the active nodes are jointly transmitted from cooperative transmission points using zero-forcing precoding. The problem is cast in form of maximizing the ergodic achievable rate subject to per-transmit-point average total power constraints. The derived power allocation indicates that depending on the channel conditions and receiving nodes' activation probability, the optimal solution takes the form of either greedy power allocation or power sharing allocation.
joint transmission
Power allocation
random node activity
coordinated multi-point (CoMP)
Author
Jingya Li
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Behrooz Makki
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Tommy Svensson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Thomas Eriksson
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
IEEE Wireless Communications and Networking Conference, WCNC 2013, Shanghai, China.
1525-3511 (ISSN)
4220-4225978-146735939-9 (ISBN)
Areas of Advance
Information and Communication Technology
Subject Categories
Communication Systems
Signal Processing
DOI
10.1109/WCNC.2013.6555255
ISBN
978-146735939-9