Computer Science – Information Theory
Scientific paper
2011-01-04
The 20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC-09)
Computer Science
Information Theory
4 pages, 3 figures [The 20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC-09)]
Scientific paper
Tomlinson-Harashima precoding (THP) is considered as a prominent precoding scheme due to its capability to efficiently cancel out the known interference at the transmitter side. Therefore, the information rates achieved by THP are superior to those achieved by conventional linear precoding schemes. In this paper, a new lower bound on the achievable information rate for the regularized THP scheme under additive white Gaussian noise (AWGN) channel with multiuser interference is derived. Analytical results show that the lower bound derived in this paper is tighter than the original lower bound particularly for a low SNR range, while all lower bounds converge to 0.5xlog2(6SNR/{\pi}e) as SNR approaches infinity.
Chang KyungHi
Hui Bing
Mohaisen Manar
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