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E-commerce is profoundly changing the economic growth and people's lifestyles, but it also become a zone of fake, shoddy and other violations of intelligent property. In view of this phenomenon, we developed an information analysis system for electronic commodities. The system adopts the web crawler technology to capture the information of the commodities, which is used to form a resource library with the patent information. Based on the resource library, the Lucene engine and deep learning are used to analyze the commodity information from text and image respectively. Experiments show that the information analyzed from the system has a good reference value to a comprehensive understanding of commodity information.

In this paper, we summarized all kinds of wireless MIMO channel and analyzed their time space model of MIMO channel model. In order to evaluate the MIMO effectively, a new time delay MIMO model was proposed. Based on 3GPP TR25.996 protocol, a new method for simulation time delay MIMO channel was proposed according to average arrival angle, extended angle of signal and structure of transceiver antennas. By computer simulation, the performance of the time delay MIMO channel was verified.

Since mobile communication has been well developed, high quantity services is also expected by mobile users, so repeaters, which amplify the coverage of both analog and digital communication base stations, have been popularly used by mobile communication providers. A repeater is a device that receives a digital or analog signal on an electromagnetic or optical transmission medium and regenerates the signal along the next leg of the medium. A series of repeaters make possible the extension of signals over weak signal areas, uncovered areas and far distance. However, in reality, repeaters more or less disturb the capabilities of themselves and other equipments, due to people do not combine the theory with practice properly and systematically. Base on reading concerned literature and actual working experience, the author has provided new solutions on common disturbed conditions of repeaters after professional analysis. Echo cancellation, a technique used to reduce the effect, is often based on the auto-correlation of the repeater signal and is effective when the width of the auto-correlation of the input signal is less than the loop delay of the echo path.

An information system formed by HAP (High Altitude Platform) will be a new generation-system for the wireless communications and HAPS (HAP Station) communication system combines the advantages of both terrestrial and satellite communication systems and avoids, to different extents, their disadvantages. It has been identified as a promising communication style in the field of telecommunication and an effective complement to the existing communication system. This paper focused on covering performance, wireless link performance and multiple spot beam cell partition scheme for HAPS. Three cell partition schemes were proposed for three scenarios in HAPS communication system. By numerical calculation and computer simulated analysis, the wireless link performance and appropriate scenario was proposed for each cell partition scheme. With reference to the engineering realization of HAPS communication system, the work in this paper is of importance.

The calling of users is very uneven and the channel collision detection ability is quite weak in communication system in near space (CSNS). To ensure quality of service (QoS), a novel load measurement access control (LMAC) protocol is proposed. Combined with Markov M/M/n queue model, integrated theoretical analytical model is established for CSNS. The effect which the waiting probability of calling service, calling number and measure parameter have on the performance of the networks are analyzed. Besides, the LMAC scheme is introduced to greatly increase the maximum throughput to 0.33 and improves the maximum throughput nearly one time compared to the maximum throughput 0.18 of the simple ALOHA protocol and closed to the theoretical bound.