Unified exact ergodic capacity results for L-branch coherent diversity combiners including
equal-gain combining (EGC) and maximal-ratio combining (MRC) are not known. This paper …

We propose a new framework for wireless network virtualization. In this framework, service
providers (SPs) and the network operator (NO) are decoupled from each other: The NO is …

This paper proposes a hybrid crypto system that utilizes benefits of both symmetric key and
public key cryptographic methods. Symmetric key algorithms (DES and AES) are used in the …

For protocol and system design in cognitive radio networks (CRNs), it is essential to identify
which system settings or environmental conditions have great impacts on the quality-of …

With classical techniques for data transmission soon reaching their limitations, cognitive
approaches may offer a solution to user requirements for better coverage, connectivity …

A secure link adaptation framework is proposed, which exploits the inherent fluctuations of
wireless fading channels for high-performance communications and physical layer security …

As the next generation of all-IP mobile communication system, LTE offers unprecedented
data transmission speed and low latency for a variety of applications and services. However …

The performance of adaptive modulation for cognitive radio with opportunistic access is
analyzed by considering the effects of spectrum sensing, primary user (PU) traffic, and time …

For coverage extension and throughput enhancement, the IEEE 802.16 j task group has
developed a novel multi-hop relay network architecture to enable typical IEEE 802.16 …

In multichannel system, user could keep transmitting over an instantaneous “on peak”
channel by opportunistically accessing and switching among channels. Previous studies …