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In this letter, we propose an adjustable observation window length (OWL) multi-branch joint detector for amplify-and-forward (AF) cooperative communication under frequency selective channels and analyze its performance. In contrast to the existing methods, the proposed detector can adaptively adjust the tap coefficient vector and OWL of each branch according to the specific channel profile of each...
Heterogeneous Network (HetNet) is a promising solution to enhance network capacity and extend network coverage by increasing cell site density in Long Term Evolution-Advanced (LTE-Advanced) systems. However, dense deployment of cell sites not only increases desired signal strength, but also intercell interference as cell sites get closer. To combat with intercell interference, Joint Processing Coordinated...
The channel capacity reflects the amount of information the channel can transmit. In particular environment, a specified link with maximum capacity is needed in order to satisfy the transmission requirements. In this paper, we propose a novel capacity maximization and spectrum allocation joint algorithm on specified link in a novel self-organized network model. First we construct an improved threshold...
In this paper, we study the performance of joint spatial-temporal spectrum sensing based cognitive radio networks (CRNs). The relationship between spatial spectrum sensing and temporal spectrum sensing under the interference constraint of primary user is investigated. Both the spectrum sensing performance and throughput of secondary system is related to sensing duration, and we argue that there exists...
Joint transmission (JT) is a promising coordinated multipoint (CoMP) transmission scheme for achieving high downlink capacities in wireless cellular networks of next generation. In this paper, an adaptive scheme, named as partial JT CoMP is presented. This scheme improves the network throughput by dynamically adjusting points involving in jointly transmitting according to the instantaneous channel...
The Feher quadrature phase shift keying (FQPSK) modulation based Physical-layer Network Coding (PNC) is investigated in this paper, by which the nonlinear distortion effects resulted from the high power amplifier (HPA) in the system can be avoided. In our presented framework, a novel remapping rule for the FQPSK modulation in the PNC system is proposed to make a better bit error rate (BER) performance...
Compressed sensing (CS) theory provides a new solution for low-rate sampling design of IR-UWB receiver, but the quantization process is usually idealized in existent CS based sampling architectures. In this paper, the influence of quantization noise is fully considered, and an IR-UWB signal reconstruction method with high anti-noise performance is proposed. Based on the analysis of the noise distribution...
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