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This paper concerns the uplink (UL) and downlink decoupled access in heterogeneous networks (HetNets) with multi-antenna base stations (BSs). Departure from the traditional minimum pathloss policy, a maximum UL signal-to-noise ratio (SNR) user association policy that takes account of multiple antennas at BSs is proposed. Based on the proposed association policy, the UL association probabilities and...
In this paper, a novel spectrum sensing algorithm called Gaussian singular value (GSV) algorithm is proposed. The method uses the ratio of the largest and the smallest singular values of the received signal matrix to detect the presence or absence of the primary signal. More importantly, GSV algorithm is improved to satisfy the requirements of MIMO situation. In addition, a measure called the credibility...
A 16bit audio SigmaDelta modulator is designed, with only 360 muw power dissipation under 0.9 V supply. A feedforward third-order single loop architecture is adopted to decrease the power dissipation. A novel double-boost switch is proposed in the design to decrease the on-resistance. A low power class-AB operational transconductance amplifier (OTA) with proposed self-adapted bias circuit is applied...
The goal of color superresolution reconstruction and demosaicing is to get an enhanced resolution image from raw single-chip data of Bayer color filter array. Two parts of regularization method, fidelity and regularization terms, are discussed in detail to solve the problem. Elastic net is successfully applied to variable-selection method; we utilize it as a novel fidelity term to improve performance...
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