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In this paper, we investigate the permanence of a class of Holling III-Tanner predator-prey diffusion system with stocking rate and time delay, the existence positive periodic solution by using Comparability Theorem, Coincidence Degree Theory. We obtain the sufficient conditions which guarantee permanent of the system and existence of the positive periodic solution of the periodic system. Some new...
This paper presents a practical channel estimation algorithm based on cyclic orthogonal training sequence for relay-assisted cooperative communication system. In this algorithm, the relay nodes receive the cyclic orthogonal training sequence and circularly shift them to ensure the orthogonality before retransmitting them. It is in low complexity and the destination node can be in a good condition...
Opportunistic Network Coding (ONC) has attracted much attention recently. The main improvement of ONC over the traditional network coding is that ONC allows the encoding node to decide whether it employs network coding based on the status of all its input streams. However, due to the nature of fading, wireless links may not always be reliable. Thus, the performance gain of ONC over traditional methods...
In this paper, we propose a systematic limited feedback scheme for multiple-input single-output (MISO) transmit beamforming systems under temporally correlated channels with feedback delay. At the receiver, the channel direction information for the forthcoming transmission is predicted along a geodesic on a unit complex hypersphere. The transmitter successively updates its knowledge to the channel...
In unitary precoded multi-antenna systems with delayed feedback, the quantized channel state information (CSI) may become outdated before its actual use at the transmitter. In this letter, by exploiting the geometric properties of the Grassmannian manifold, we invoke the use of Grassmannian subspace predictive coding (GSPC) to overcome this problem. Under the framework of GSPC, a novel limited feedback...
In order to design a simple and highly accurate channel estimator for wireless personal area network systems, this paper proposes Golay sequence aided channel estimation. To evaluate the performance of proposed channel estimation, bit error rate performance of single-carrier transmission with frequency-domain equalization has been analyzed by computer simulation. When 8PSK modulation and Reed-Solomon...
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