Two methods are proposed in this paper to estimate asymptotic and exact bit error rate
(BER) in two-hop amplify-and-forward (AF) relay networks. Rayleigh-fading channels are …

This paper presents an Energy Efficient Medium Access Control (MAC) protocol for clustered
wireless sensor networks that aims to improve energy efficiency and delay performance. The …

提出了一种基于功率分配的双向协作频谱接入方法. 在该方法中, 认知用户通过双向协作的方式
接入授权用户频谱, 使用一部分功率转发授权用户信息, 帮助授权用户达到目标速率 …

This paper presents a new method for analyzing the Bit Error Rate (BER) performance of two-
hop Amplify-and-Forward Multiple Relay (AF-MR) networks. This paper considers, a flat …

In this paper, we propose an anti-interference cooperative spectrum sharing strategy for
cognitive system, in which a secondary system can operate on the same spectrum of a …

Inefficient use of spectrum is one of the main drawbacks of cooperative protocols that
employ half-duplex relay nodes. In this paper, for a multi-relay cooperative network with …

Outage performance analysis of energy harvesting underlay CR network using proactive
and reactive DF relay selection schemes in presence of non-identical Rayleigh fading …

With the ever-increasing wireless data application recently, considerable efforts have been
focused on the design of distributed explicit rate scheme based on Network Utility …

In this paper, we propose a spectrum access method based on energy harvesting with
optimal power allocation. Specifically, in the first phase, the primary user broadcasts its …

Channel selection in multichannel cognitive radio system and relay selection in multi-relay
cooperative system are well studied problems in separate branches. In this study, we …