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Electrical connectors play a significant role in the electronic and communication systems. As they are often exposed in the atmosphere environment, it is extremely easy for them to cause electrical contact failure. It is essential to carry out the reliability modeling and predict the lifetime. In the present work, the accelerated lifetime testing method which is on account of the uniform design method...
The enhanced eigenvalue decomposition (EEVD) based channel estimation algorithm, which could solve the pilot contamination problem in massive multiple-input and multiple-output (Massive MIMO) channel estimation when the number of antennas at base stations (NABT) tends to infinity, is proposed in this paper. The algorithm is based on the close relationship between covariance matrix of received pilot...
The authors pay focus on the K user multiple-input multiple-output (MIMO) Gaussian interference channel (IC) with M transmitting antennas and N receiving antennas, in which min (M, N)/max (M, N) ⩾ (K−1)/[K (K−2)] and K > 3. The channel coefficients are variable, time varying or frequency selectively drawn from a continuous distribution. Based on ergodic interference alignment (IA), an achievable...
In this paper, a digital signature with high security based on location information is proposed. Based on the characteristics of mobile terminal, we proposed the scheme, taking network attack and physical attack into consideration, to insure the data on mobile terminal to insure user's right. By analyzing related location data to calculate user's often area, we judges whether user's current access...
Dust particle contamination is generally recognized as one of the major inducement to the electrical connector failure in communication systems. Contamination within the connector may affect the signals which is transporting through and turn it to be some fault signals. Wavelet Transform is proved to be a great detector and has been widely applied in power systems. However, relatively little work...
One of the major challenges for wireless network design is the efficient mobility management Mobile IP is a commonly accepted protocol to realize the global mobility. Mobile IP networks suffer high binding update traffic from high rates of handoffs and long packet delivery delay from the large distance to the home network. In this paper, we introduce a new seamless handoff solution for macro-mobility...
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