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

Volume

58

Issue

10

fYear

2010

fDate

10/1/2010 12:00:00 AM

Firstpage

3011

Lastpage

3020

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;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2010.083110.080617

Filename

5567182