Zhongjiang Yan

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—Wireless sensor networks (WSNs) are widely used for various applications. In some applications, it is very likely that the number of sensors is limited, the initial deployment is random, and deployment " holes " (i.e., subareas where there is no sensor) may exist. Therefore, a major challenge in WSNs is to improve the network coverage. A viable solution is(More)
A limited feedback joint precoding for amplify-and forward relaying, " IEEE Trans. MIMO relaying broadcast channels with linear precoding and quantized channel state information feedback , " IEEE Trans. Robust linear beamforming for MIMO relay broadcast channel with limited feedback, " IEEE Signal Process. MMSE relaying design for multi-antenna two-hop(More)
A movement control algorithm is presented to improve the performance of mobile Ad Hoc networks on condition that positions are unavailable for nodes. The algorithm proposes a way to move the mobile nodes to the optimal position, only according to the detected signal strength. Beginning with the definition of the performance function, the article then proves(More)
In the past few decades, the world has witnessed a rapid growth in mobile communication and reaped great benefits from it. Even though the fourth generation (4G) mobile communication system is just being deployed worldwide , proliferating mobile demands call for newer wireless communication technologies with even better performance. Consequently, the fifth(More)