Title :
Required Transmit Power Applying Tomlinson-Harashima-Precoding in Scalar and MIMO Broadcast Systems
Author :
Huppert, C. ; Klotz, J.G.
Author_Institution :
Inst. of TAIT, Ulm Univ., Ulm, Germany
fDate :
10/1/2010 12:00:00 AM
Abstract :
Tomlinson-Harashima-precoding can be used as dirty-paper-coding method for transmissions over a broadcast channel. However, applying it to the individual user messages the final transmit power may vary from the sum of single user powers. This paper investigates the required transmit power for Tomlinson-Harashima-precoding in two user broadcast systems. Additionally, upper and lower bounds on the required power are derived. First our considerations are done in scalar channels. Then we extend the results to MIMO systems. In order to judge the performance of THP applied as broadcast technique we finally determine the achievable user rates.
Keywords :
MIMO communication; broadcast channels; precoding; MIMO broadcast system; Tomlinson-Harashima-precoding; broadcast channel; dirty-paper-coding method; multiple input multiple output system; scalar channel; transmit power; Array signal processing; Fading; Interference; Lattices; MIMO; Propagation losses; Quadrature amplitude modulation; MIMO; Tomlinson-Harashima-precoding; achievable rates; broadcast channel; dirty-paper-coding; interference cancellation; power loss; transmit power;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2010.083110.080617
