High–bit–rate communication over power lines is a promising solution to the last–mile problem. We examine the use of bandwidth–efficient, non–coherent multicarrier modulation as simple, flexible, and robust transmission scheme over power–line channels. Adaptive, requiring channel state information at the transmitter, and non–adaptive multicarrier modulation are discussed and assessed. The effec...

Adaptive modulation system is one of the key techniques in building a broadband mobile communication network because of increasing shortage of wireless communication channels. Quadrature amplitude modulation (QAM) has been widely used in adaptive modulation because of its efficiency in power and bandwidth. To better understand the QAM system, a Simulink-based simulation system is designed. In t...

We combine network utility maximization with adaptive modulation and examine adaptive rate and adaptive transmission powers schemes that maximize average utility, subject to constraints on average transmission power and BER. A broad class of parameterized utility functions is considered as are instantaneous and average BER. Closed form optimal strategies are found for several commonly used clas...

Mobile and Wireless Communication Department, Medway School of Engineering, The University of Greenwich, United Kingdom. Corresponding Author: Titus Eneh __________________________________________________________________________________________ Abstract Adaptive multiuser receivers scheme for MIMO OFDM over Iterative-Equalization for Single-Carrier Transmission, which we refer to as Iterative A...