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CN, a quarterly journal, dedicates to the latest advancements in communications and network technologies. The goal of this journal is to keep a record of the state-of-the-art research and promote the research work in these fast moving areas. All manuscripts submitted to CN must be previously unpublished and may not be…
Chao Gong, Manxi Wang, Daoxing Guo, Xiaofei Pan
The application of Low Density Parity Check (LDPC) code in the anti-interference systems has drawn an increasing attention, due to its admiring performance which is very close to the theory limit. This paper focuses on a LDPC encoded slow frequency hopping (S…
Junfang Li, Wenxiao Chen, Shaoli Kang, Yongming Guo
Spectrum sensing is one of the most important steps in cognitive radio. In this paper, a new fully-distributed collaborative energy detection algorithm based on diffusion cooperation scheme and consensus filtering theory is proposed, which doesn’t need the ce…
Xiao-Hui Lin, Yi-De Huang, Chao Yang, Ning Xie, Bin Chen, Shengli Zhang, Hui Wang
In wireless network, terminals are usually energy constrained. In order to extend the lifetime of the terminal, the limited energy must be utilized in an efficient manner. In this paper, under the constant transmission power scenario, we propose an Energy Eff…
Ning-qing Liu, Bin Sun, Chun-meng Guan
To solve the problem of the large Doppler frequency offset in the LEO communication system, this paper studies a rapid PN code acquisition method based on the PMF-FFT architecture, which searches the phase and frequency offset and at the same time reduces the…
Shamim Al Mamun, M. Shamim Kaiser, Muhammad R Ahmed, Md. Shafiqul Islam, Md. Imdadul Islam
The spot-diffusing technique provides better performance compared to conventional diffuse system for indoor optical-wireless communication (OWC) system. In this paper, the performance of an OW spot-diffusing communication system using Neuro-Fuzzy (NF) adaptiv…
Wei Yu, Hongyan Li, Jiandong Li, Lin Jin, Kun Yuan
Delay Tolerant Networks (DTNs) is a dynamic topology network, in which connection durations of each link are variable and paths between two nodes are intermittent. Most of protocols which are widely used in traditional wireless network are not suitable for DT…
Tao Peng, Yue Xiao, Shaoqian Li, Huaqiang Shu, Eric Pierre Simon
Orthogonal frequency division multiplexing-interleave division multiple access (OFDM-IDMA) systems may suffer from serious inter-carrier interference (ICI) in time-and frequency-selective (doubly selective) channels. In such case, the conventional OFDM-IDMA d…
Ping Liu, Guanfeng Li
Aiming at shortage of the SPIHT algorithm, an improved image compression algorithm is proposed, in order to overcome the shortcomings of decoding image quality and coding time, LS9/7 lifting wavelet transform is adopted. According to the characteristics of th…
Qiong Wu, Junni Zou, Kangning Zhu
This paper addresses power allocation problem for spectrum sharing multi-band cognitive radio networks, where the primary user (PU) allows secondary users (SUs) to transmit simultaneously with it by coding SU's signal together with its own signal. The PU acts…
Qiang Peng, Youchen Dong, Weimin Wu, Haiyang Rao, Gan Liu
Dynamic spectrum access (DSA) scheme in Cognitive Radio (CR) can solve the current problem of scarce spectrum resource effectively, in which the unlicensed users (i.e. Second Users, SUs) can access the licensed spectrum in opportunistic ways without interfere…
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CN, a quarterly journal, dedicates to the latest advancements in communications and network technologies. The goal of this journal is to keep a record of the state-of-the-art research and promote the research work in these fast moving areas. All manuscripts submitted to CN must be previously unpublished and may not be… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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