This paper presents a geometric analysis of the convergence condition for the Foschini-Miljanic power control algorithm with and without fading. In the fading case, a condition on the Lyapunov exponent is provided as the convergence condition. The Möbius transform is exploited for the first time to analyze the convergence conditions for both non-fading and fading cases. For the two-transmitter ...

This paper studies the information theoretic secrecy sum-rate for multi-user multiple-input single-output (MU-MISO) visible light communication (VLC) systems with confidential messages. The well-known Zero-Forcing (ZF) precoding method is employed to ensure confidentiality among legitimate users and, at the same time, to prevent eavesdropper(s) from obtaining any information. Different from rad...

The optimization of energy consumption in the cloud computing environment is the question how to use various energy conservation strategies to efficiently allocate resources. The need of different resources in cloud environment is unpredictable. It is observed that load management in cloud is utmost needed in order to provide QOS. The jobs at over-loaded physical machine are shifted to under-lo...

The two concepts that are most fundamental to the realistic modeling of communication systems are the randomness of the source signal or message to be transmitted and the constraints imposed by the communication channel. A channel constraint that may be either random or deterministic or part of both is the impulse response and the bandwidth of the channel. Average or peak power limitation is re...

Introduction: Spectroscopic imaging based on conventional 3D PRESS localization is improved by using very selective suppression (VSS) pulses for outer volume suppression [1]. Cosine-modulated VSS pulses can be used to simultaneously suppress two parallel bands [2] but doubles the required peak RF amplitude. This abstract presents an efficient method for designing a dualband VSS pulse that requi...

The implementation ofmulticarrier (MC)modulation inwireless andwireline communication systems, such as OFDM and DMT, is restricted by peak signal power, due to a sensitivity of the technique to distortions introduced by nonlinear devices. By controlling the peak power, the negative influence of signals with high peaks on the performance of the transmission system is greatly reduced. This book d...