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In massive MIMO systems, multiple high-speed high-resolution ADCs will be a major obstacle for real applications because of the hardware complexity and power consumption. One solution to this problem is to adopt low-cost low-resolution ADCs instead. Note that highly quantized signals will destroy the orthogonality of OFDM design, the key point remains to find computational decoding methods while maintaining...
This paper considers a multiple-input-multiple-output (MIMO) cognitive radio network, where secondary users (SUs) equipped with multiple antennas coexist with a primary user (PU). Joint power allocation and transmission beamforming design is proposed to optimize the network energy efficiency under power constraint and interference temperature constraint. Distributed algorithm that maximizes energy...
Video enhancement has played very important roles in many applications. However, most existing enhancement methods only focus on the spatial quality within a frame while the temporal qualities of the enhanced video are often unguaranteed. In this paper, a new algorithm is proposed for video enhancement. The proposed algorithm introduces new temporal constraints and combines them with the spatial constraints...
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