Aggregate node placement for maximizing network lifetime in sensor networks
Sensor networks have been receiving significant attention due to their potential applications in environmental monitoring and surveillance domains. In this paper, we consider the design issue of sensor networks by placing a few powerful aggregate nodes ...
Sequence design for MPG QS-CDMA systems based on heuristic combinatorial optimization
This paper deals with a quasi-synchronous code division multiple access (QS-CDMA) system with a multiple processing gain (MPG) variable data rate scheme in the uplink direction and subject to multipath fading channels. An analytic expression is obtained ...
Simplified bit error rate evaluation of Nagakami-m PSK systems with phase error recovery
An efficient analytical and simulation techniques were developed to analyze the bit error rate of PSK Nakagami-m fading systems with imperfect carrier recovery. We evaluate the detection loss due to the carrier recovery for different rms phase error ...
Cross-layer design for topology control and routing in MANETs
A mobile ad hoc network (MANET) is a self-organized and adaptive wireless network formed by dynamically gathering mobile nodes. Since the topology of the network is constantly changing, the issue of routing packets and energy conservation become ...
Adaptive Rake receiver based on the nonlinear ACM technique
Ultra-wideband (UWB) system is one of the possible solutions to future short-range indoor data communications with large frequency bandwidth. However, it must coexist with other narrowband wireless systems that may cause interference to each other, and ...
Analytical modeling and resource planning for cognitive radio systems
Cognitive radio heralds the next step in the evolution of wireless communications. In this paper, an analytical model for infrastructure based cognitive radio systems is proposed, and its performance is evaluated under bursty traffic scenarios in a ...