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In this paper, we study the secrecy performance of cooperative single carrier system with the kth-best user selection scheme in Rayleigh fading channels. Assuming perfect decoding at the relay, we choose the legitimate user with the kth-best instantaneous signal-to-noise ratio (SNR) among Q users to receive the forwarded messages, which are intercepted at a passive eavesdropper simultaneously. To...
Confronted with the rapidly increasing demand of mobile traffic and heavy energy consumption on base stations (BSs), the base station (BS) sleeping strategy becomes a promising method to promote the system energy efficiency (EE). To switch off the redundant small-cell base stations (s-BSs) without whittling down the network EE in small cell networks, we propose a novel environment-friendly distributed...
Automatic link establishment (ALE) is one of the important technologies in HF communication. One of the indicators to measure the performance of an ALE system is the linking time, which includes channel switching, spectrum sensing, and trying to call three periods. Asynchronous mode has been widely used for its simple operation. When establishing an link, the station sorts all the channels and selects...
Physical transceivers have hardware impairments that create distortions which degrade the performance of communication. This paper analyses the performance with partial relay selection in amplify-and-forward (AF) cooperative network with Hardware Impairments, where the relay node is selected depending on the instantaneous channel information of source-relay hop. The vast majority of technical contributions...
This paper analyses an incremental relaying uplink model with partial relay selection. It describes the transmission between the base station (BS) and the mobile station (MS). The BS is a multi-antenna destination. The performance measured of the system are derived which include ergodic capacity and outage probability over Rayleigh fading channel. Combined with the other papers, this paper mainly...
In this paper, we propose the SNR-based hybrid incremental/selection Decode-and-Forward (H-ISDF) relaying protocol. In the new protocol, the destination and the relay jointly choose relaying protocol based on the quality of the received signal at the destination and the relay, specifically, source retransmission in the second phase is allowed. We evaluate the performance of the protocol in terms of...
Gain and phase errors sensitivity is an issue common to all high-resolution direction-of-arrival estimators. In this paper, we first provide the conventional and improved data models. Second, based on the conventional data model, an algorithm called estimation algorithm for the conventional data model (EACDM) is proposed to estimate the gain and phase errors existing in the sensor array for the uniform...
The next generation wireless network (NGWN) is envisioned as convergence of heterogeneous wireless networks. The vertical handoff plays an important role in supporting the service continuity and guaranteeing the quality of service (QoS). How to select the target network becomes the vital issue of designing the vertical handoff algorithm. In this paper, we propose a novel service-adaptive multi-criteria...
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