TY - GEN
T1 - Power allocation algorithms for ZF-THP sum rate optimization in multi-user multi-antenna systems
AU - Lee, Wookbong
AU - Song, Changick
AU - Lee, Sangrim
AU - Lee, Kilbom
AU - Kwak, Jin Sam
AU - Lee, Inkyu
PY - 2012
Y1 - 2012
N2 - In this paper, we study a power allocation technique for Tomlinson-Harashima precoding (THP) in multi- user multiple input single output (MISO) downlink systems. In contrast to previous approaches, a mutual information based method is exploited for maximizing the sum rate of zero-forcing THP systems. Then, we propose a simple power allocation algorithm which assigns proper power level for modulo operated users. Simulation results show that the proposed scheme outperforms a conventional water-filling method, and achieves near optimal performance with much reduced complexity.
AB - In this paper, we study a power allocation technique for Tomlinson-Harashima precoding (THP) in multi- user multiple input single output (MISO) downlink systems. In contrast to previous approaches, a mutual information based method is exploited for maximizing the sum rate of zero-forcing THP systems. Then, we propose a simple power allocation algorithm which assigns proper power level for modulo operated users. Simulation results show that the proposed scheme outperforms a conventional water-filling method, and achieves near optimal performance with much reduced complexity.
UR - http://www.scopus.com/inward/record.url?scp=84864995392&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864995392&partnerID=8YFLogxK
U2 - 10.1109/VETECS.2012.6240084
DO - 10.1109/VETECS.2012.6240084
M3 - Conference contribution
AN - SCOPUS:84864995392
SN - 9781467309905
T3 - IEEE Vehicular Technology Conference
BT - IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
T2 - IEEE 75th Vehicular Technology Conference, VTC Spring 2012
Y2 - 6 May 2012 through 9 June 2012
ER -