Papers by Keyword: Transmission Rate

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Authors: Li Biao Jin, Jun Guo, Jian Zhang
Abstract: In this paper, a quasi-orthogonal space time block coding (QO-STBC) scheme with maximum likelihood (ML) decoding via simple linear and single-complex-symbol detection is proposed. We present a fast and simple linear decode processing by embedding a transformed signal space. The method benefits from the reduced maximum likelihood decoding complexity via the pre-interleaving to QO-STBC. We also proposed codes with 3/4 of the full transmission rate for the specific cases of 8 transmit antennas. Finally, the numerical results show the proficiency of our design procedure, demonstrating that significant improvements in BER are achievable when the rate or receive antennas increases.
Authors: Yi Dan Wang, Yi Liu
Abstract: Wireless Body Area Network (WBAN) can implement the wireless communication between several micro-sensor units, so as to meet demand of medical remote monitoring, disease control, disease prevention and others. In this paper, we will analysis in-depth of some characteristics of three routing protocols commonly used in wireless sensor network, including energy consumption, transmission rate, network stability and unexpected resilience of communication. There are also some statements for both the strengths and weaknesses of each protocol and the improvement advices, finally according to the characteristics of each protocol to analyze the respective applicable WBAN types. By improving the routing protocols, WBAN can provide more practical and beneficial applications in the medical, entertainment and other fields, thereby the popularity of it will be improved.
Authors: Xiao Ping Jin, Hui Zhen Feng, You Ming Li
Abstract: In this paper, a novel cooperation space-time network coding (CSTNC) scheme based on multi-sources distributed cooperative network is considered. In this scheme, multiple sources transmit signals to relay and destination node. The relay re-encodes the decoded signals through space-time network coding with the aid of multiple antennas. The simulation shows that the BER, capacity and outage probability of the CSTNC becomes better with the increasing of relay antenna number and very close to traditional space-time network coding (TCSTC) scheme. Meanwhile, transmission efficiency analysis demonstrates that CSTNC scheme has higher transmission rate.
Authors: Cheng Guan, Xi Ming Sun, Xiang Yue Yuan, Ke Du, Kang Hua Li
Abstract: The intelligent water-saving valve without power supply is an equipment characterized by high automation, low costs and controlling without power supply, which is targeted to solve problems of water-saving irrigation equipment all around the world. To make this valve apply in production and irrigation better, this paper does research on transmission rate of moisture between humidity sensitive materials and external environment, and illustrates three rules: (1) For different types of soil, the fastest transmission rate of moisture between humidity sensitive materials and soil could be found in sand and the slowest one in clay. (2) For different ratios of humidity sensitive materials, the material water-absorption ratio performs faster when ratio is 1:1 than 1:3; and material water-loss ratio performs slower when ratio is 1:1 than 1:3. (3) For whether humidity sensitive materials contact with air or not, the transmission rate is faster when contacting with air.
Authors: Bin Zhou
Abstract: This paper studied the original rubber suspensions, which found that the original rubber suspension has high transfer ratio, not conducive to energy attenuation. In view of this situation, redesigned of the new rubber suspension, the new rubber suspension was studied by 3D numerical analysis, the results show, the new suspension on the structure and mechanical properties can meet the needs of the engine. The new suspension and the original suspension are doing the contrast test, the results show, the new suspension has the low transmission rate, and transmission rate increases with the speed change relatively flat, which to improve the comfort of the car.
Authors: Tai Long Gui, Ji Ying Wen, Jin Shuo Mei
Abstract: ZrO2 thin films were deposited on glass substrates via RF magnetron sputtering technique and post-deposition annealing treatment.The films transmittance and surface structure were investigated by means of Ultraviolet spectrophotometer, AFM and XRD. The effect of annealing on the optical properties of the films has been studied as well.The research result indicates that the size of ZrO2 film grain obviously gets bigger, the surface is more smooth and transmission rate increases after 800°C, annealing 30min.
Authors: Ya Qi Li, Jia Guo
Abstract: Multimedia business network architecture is to raise the transmission rate of multimedia information, reduce the delay characteristics of the transmission process, so the multimedia service website can operate fast, reliable. In this paper we use multiple distributed IP technology to design the multimedia business network structure of IPV6. In order to verify the performance of network structure, we use IPerf software to test the performance of IPV6 multimedia business web site, and compare the performance of network under different distributed IP. By contrast, the network transmission speed of the multi distributed IPV6 is highest, delay characteristics are the shortest; and the distributed IPV6 is secondary; the worst is the general distributed IP. The transmission rate is 2.32 M/s; network delay characteristics can reach 232.21 ms, which verifies the important role of distributed IP in the multimedia business site structure. It provides technical support for the study of multimedia network.
Authors: Ye Li, Jing Sai Jiang, Xiao Feng Ma
Abstract: Underwater speech communication for middle-long distance has the characteristics of narrow bandwidth as well as low transmission rate, which makes the underwater speech communication much difficult. Nevertheless, speech communication based on storage and transmission makes it feasible. The paper introduced the principle of speech communication based on storage and transmission firstly and then analyzed the terminal buffer size as well as the communication delay when such technique was applied. The feasibility along with localization is pointed out in conclusion.
Authors: Jun Wei Ma, Li Yan, Xiao Wei Hao, Xue Jiang Gao, Wei Zhao
Abstract: Power user electric energy data acquire system is the important part of building a strong smart grid, and the communication system building is placed in the key position. Firstly, the application of wireless communication technology in the electric energy data acquire system is introduced in this paper. Secondly, the EPON technology is given. Lastly, a comparison of the two communication schemes is made in the ten aspects in detail, hoping that it is as a reference for the construction of power user electric energy data acquire system.
Authors: Ren Shi Yu, Wen Feng Sun, Yan Zhao Li
Abstract: With rapid progress of our society, people put forward higher requirements in speed of wireless communication and method of wireless communication than before. In this paper, the technology of multi-hop relay in wireless communication is illustrated firstly. Then two relay modes of multi-hopamplification-relay and decoding-relay, and relay mechanism are introduced in detail. The implementation of multi-hop system is also analyzed and simulated. At last, the prospect of the technology of multi-hop relay is predicted and expected.
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