Power-adaptation strategies for DS/CDMA communications with successive interference cancellation in Nakagami-fading channels
Ye Hoon Lee
Bar-Ness, Y.
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA;
This paper appears in: Vehicular Technology, IEEE Transactions on
Publication Date: July 2004
Volume: 53,
Issue: 4
On page(s): 1160- 1166
ISSN: 0018-9545
INSPEC Accession Number: 8051497
Digital Object Identifier: 10.1109/TVT.2004.830152
Current Version Published: 2004-07-26
Abstract
In this paper, power adaptation for direct-sequence code-division multiple-access communications that employs a successive interference cancellation (SIC) receiver is considered. The transmission power is adapted so that, with the channel variations, the received power levels of each user have appropriate disparities. Under the constraint of average transmission power, we consider two strategies in adjusting the disparity between received signal powers. With the first strategy, the average bit-error rate (BER) for a given user averaged over channel fading statistics is minimized, while with the other, the instantaneous BER is equal for all users. We find that the performance difference between the two strategies becomes negligible as the average transmission power or line-of-sight component increases. We also discuss the impact of appropriate disparity in received power levels on the BER performance of SIC receivers.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
