CHINACOM 2011
C3HetNet 2011CSCN 2011NRN 2011SATCOM 2011ADIM 2011HSR Com 2011

    CHINACOM

    6th International ICST Conference on Communications and Networking in China

    The aim of CHINACOM is to bring together Chinese and international researchers and practitioners in communications, networking and information technologies to showcase the latest advances in these areas. Following the big successes of CHINACOM'06-'10, CHINACOM'11 will be held in Harbin, China, one …

    The aim of CHINACOM is to bring together Chinese and international researchers and practitioners in communications, networking and information technologies to showcase the latest advances in these areas. Following the big successes of CHINACOM'06-'10, CHINACOM'11 will be held in Harbin, China, one of the most beautiful cities in China, on Aug. 17-19 2011. The conference will be technically sponsored by Create-Net and Harbin Institute of Technology (HIT). CHINACOM is developing into a premier annual international conference for the presentation of original research advances in the field of communications, networking and advance information technologies. The conference will consist of four technical symposia, panels, workshops and tutorials. The technical sessions will present original research of fundamental or practical significance, while the panels and workshops will focus on recent developments, emerging applications, related business issues, and special topics. Original contributions on recent advances in testbed developments and design and experimental evaluations of systems and subsystems are particularly encouraged.

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    Editor(s): Shuguo Wang , Victor C.M. Leung , Peter Han Joo Chong and Boon-Chong Seet
    Publisher
    IEEE
    Conference dates
    17th–19th Aug 2011
    Location
    Harbin, People's Republic of China
    Appeared in EUDL
    27th Mar 2012
    Appears in
    IEEEXplore

    Copyright © 2012–2013 IEEE

    • Influence of Aberrations of Receiver Antenna on Heterodyne Efficiency in Free-space Optical Communications Based on Heterodyne Detection

      Research Article in 6th International ICST Conference on Communications and Networking in China

      Qingbo Yang, Liying Tan, Jing Ma

      Abstract
      Heterodyne efficiency in free-space optical communications based on heterodyne detection is degraded by the aberrations of the optics antenna used for reception of optical beams. The evolution of het…Heterodyne efficiency in free-space optical communications based on heterodyne detection is degraded by the aberrations of the optics antenna used for reception of optical beams. The evolution of heterodyne efficiency with the change of rms of primary aberrations is investigated. It is shown that heterodyne efficiency decreases gradually with increasing primary aberrations. The comparison shows that different aberration types have variant influence on heterodyne efficiency. In addition, obscuration ratio of receiver antenna has a noticeable but relatively minor influence on heterodyne efficiency. We hope this work can benefit system design of heterodyne receiver in free-space coherent communications.
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    • Load balancing between TD-SCDMA and GSM systems with asymmetric traffics

      Research Article in 6th International ICST Conference on Communications and Networking in China

      Liang Lei, Aiping Huang, Cunqing Hua, Zhouyun Wu, Jun Qian, Liang Shen, Xinwei Chen, Yusheng Zhang

      Abstract
      Load balancing between heterogeneous TD-SCDMA and GSM systems with asymmetric traffics is investigated in this paper. The uniform measurement of the system loads, the principle and steps of handoff-b…Load balancing between heterogeneous TD-SCDMA and GSM systems with asymmetric traffics is investigated in this paper. The uniform measurement of the system loads, the principle and steps of handoff-based load balancing algorithm are described for the heterogeneous systems with unequal user capacities. The load relation between TD-SCDMA and GSM systems carrying asymmetric services is classified into four cases. For each case, trigger condition of handoff operation, the traffic volume to be migrated and the criteria of selecting users to be migrated are analyzed. Simulation results show that the algorithm can make the loads of the systems more balanced and the performance of the system with higher load is improved effectively.
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    • Frequency-domain Iterative Inter-code Interference Combined with Parallel Interference Cancellation for Cooperative-MIMO Multi-code DS-CDMA

      Research Article in 6th International ICST Conference on Communications and Networking in China

      Bo Liu, Weixiao Meng, Qiyue Yu, Xi Chen

      Abstract
      In future wireless communications, it is severe frequency-selective fading channel to support high data rate; meanwhile the available bandwidth becomes limited. To improve the spectrum-efficiency, on…In future wireless communications, it is severe frequency-selective fading channel to support high data rate; meanwhile the available bandwidth becomes limited. To improve the spectrum-efficiency, one of the promising techniques is multiple input multiple output (MIMO) multiplexing technique. However, the space of one user terminal is limited, and it is difficult to accommodate more antennas in one terminal. Thus, cooperative communication is proposed, to achieve diversity and multiplexing gain via different user terminals. In this paper, a cooperative-MIMO based on multi-code direct sequence code-division multiple access (DS-CDMA) system is presented, which improves the spectrum efficiency a lot. However, the severely fading channel degrades the bit error rate (BER) performance of the proposed system significantly. The paper provided a frequency-domain iterative inter-code interference (ICI) combined with parallel interference cancellation (PIC) technology (ICP), which makes it possible to eliminate the interference between antennas and the residual inter-code interference between codes. From the simulation results, it is derived that the proposed method improves BER performance and the throughput of the system significantly.
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    • Channel Capacity Analysis on Cooperative MIMO with Antenna Spatial Correlation and Multi-path

      Research Article in 6th International ICST Conference on Communications and Networking in China

      Trungtan Nguyen, Weixiao Meng, Hongyu Wang

      Abstract
      Recent years, cooperative technology has taken a lot of attention since it can improve the bit error rate (BER) and lower the transmit power in radio mobile networks, especially when the direct chann…Recent years, cooperative technology has taken a lot of attention since it can improve the bit error rate (BER) and lower the transmit power in radio mobile networks, especially when the direct channel between the source and the destination is poor. Cooperative multiple input multiple output (Co-MIMO) is a kind of MIMO technique, where the multiple inputs and outputs are formed via cooperation. The capacity of Co-MIMO system over wireless channel has been investigated a lot, however few papers pay attention to the effect of antenna spatial correlation and the number of Multi-path to the capacity of MIMO channel. This paper focuses on this problem. Simulation results show that cooperation between different terminals can reduce antenna spatial correlation, thereby increase the capacity and throughput of the system, and even reach the ideal capacity of MIMO system. Meanwhile, the number of multi-path Rayleigh fading does not affect the channel capacity.
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    • Research on image transmission equalized by dual-mode blind algorithm

      Research Article in 6th International ICST Conference on Communications and Networking in China

      Baoju Zhang, Wei Wang, Ruijuan Wang

      Abstract
      The traditional equalization technologies expose some shortages while people put forward higher demanding to quality of communication system and transmission rate. SC-FDE (Single-Carrier Frequency-Do…The traditional equalization technologies expose some shortages while people put forward higher demanding to quality of communication system and transmission rate. SC-FDE (Single-Carrier Frequency-Domain Equalization) is becoming a research hotspot in wideband wireless communication area because of its special predominance. In recent years, the research on SC-FDE develops quickly. We take a study on feasibility of building SC-FDE system by comparing performance with OFDM (Orthogonal Frequency Division Multiplexing). This paper takes a study on a dual-mode (DD-LMS+MCMA) blind equalization algorithm applied in a single-carrier system. And then we build the simulation model of image transmission in SC-FDE system and get the direct and better result through the comparative analysis of image.
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