Title :
On a Power Allocation Method for IDMA Systems
Author :
Lau, Mark S K ; Yue, Wuyi ; Wang, Peng
Author_Institution :
Dept. of Intell. & Inf., Konan Univ., Kobe
fDate :
8/1/2008 12:00:00 AM
Abstract :
A method was proposed in this journal (vol. 6, no. 1, pp. 192-201, 2007), which tackles a power allocation problem for interleave-division multiple-access (IDMA) systems over fading channels. In this paper, we show that the method may not provide valid solutions in some situations. We illustrate this with many numerical examples. Our findings indicate that the method should be applied carefully, and further investigation is required to find efficient methods for more general situations.
Keywords :
fading channels; multi-access systems; IDMA systems; fading channel; interleave-division multiple-access systems; power allocation problem; Bandwidth; Fading; Interference; Iterative decoding; Multiaccess communication; Multiuser detection; Signal generators; Signal processing; Signal to noise ratio; Wireless communication; CDMA; IDMA; SINR evolution; iterative multi-user detection; optimization; power allocation;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2008.070258
