Title :
A new parallel greedy bit-loading algorithm with fairness for multiple users in a DMT system
Author :
Akujuobi, Cajetan M. ; Shen, Jie ; Sadiku, Matthew N O
Author_Institution :
Center of Excellence for Commun. Syst. Technol. Res., Prairie View, TX
Abstract :
This letter first reviews the multiuser bit-loading algorithms for discrete multitone systems. Then an improved algorithm is proposed, which allows several users to get additional bits in parallel. It reduces the number of iterations dramatically. A new fairness coefficient is also introduced to reduce the variance of the data rate among users
Keywords :
digital subscriber lines; greedy algorithms; DMT system; data rate variance reduction; discrete multitone systems; fairness coefficient; multiple users; parallel greedy bit-loading algorithm; Copper; Costs; DSL; Data communication; IP networks; Internet telephony; Iterative algorithms; OFDM modulation; Power cables; Web and internet services; Digital subscriber lines (DSL); discrete multitone (DMT); greedy bit loading; power spectral density (PSD); waterfilling algorithm;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2006.878824
