Title :
Performance analysis of multiuser power control algorithms for VDSL
Author :
Rashdi, Adnan ; Sheikh, Noor M. ; Sheikh, A.U.H.
Author_Institution :
Dept. of Electr. Eng., Eng. & Technol. Univ., Lahore
Abstract :
In modern digital subscriber line (DSL) systems where multiple users coexist in the same frequency band, multiuser power control is an effective technique for reducing crosstalk interference and improving total system throughput. This paper considers the rate and power control problem in a frequency selective interference channel. The objective of the rate and power control is to maximize the achievable rate region, given an average power constraint for each user. We analyse the performance of both the distributed and centralized multiuser power control algorithms for very high bit rate digital subscriber lines (VDSL) and suggest a multiuser centralized power control algorithm which when applied to the VDSL upstream transmission enlarges the data rate region
Keywords :
centralised control; crosstalk; digital subscriber lines; distributed control; multiuser channels; performance evaluation; power control; telecommunication control; telecommunication power supplies; VDSL upstream transmission; centralized multiuser power control; crosstalk interference; data rate region; digital subscriber line systems; distributed multiuser power control; frequency band; frequency selective interference channel; multiuser centralized power control; performance analysis; rate control problem; very high bit rate digital subscriber lines; Algorithm design and analysis; Bit rate; Crosstalk; DSL; Frequency; Interference channels; Interference constraints; Performance analysis; Power control; Throughput; Digital Subscriber Line (DSL); Interference Channel; Near Far Problem; Power Control; Upstream Power backoff (UPBO);
Conference_Titel :
Electro Information Technology, 2005 IEEE International Conference on
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-9232-9
DOI :
10.1109/EIT.2005.1627014
