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codebook design for uplink of densely small cells

Journal of Systems Engineering and Electronics 2014年第4期25卷 531-537页

作者： Weikai Tan Aihuang Guo Wei Luo Wenjuan Sheng Yeqing Qian School of Electronics and Information Engineering Tongji University

The shrinking of cell-size brings significant changes to the wireless uplink of densely small cells （DSCs）. A codebook design is proposed that utilizes the strong line of sight （LOS） chan- nel component existing in a DSC system for uplink of the DSC system. To further improve the uplink performance, the high-rank codebook is designed based on singular value decomposition （SVD） due to the unnecessary preservation of strict constant modulus in the DSC system. And according to the simulation result, the proposed codebook leads to significant sum-rate gain and appreciable block error rate （BLER） performance improvement in the DSC system.

关键词： densely small cell (DSC) codebook design uplink,line of sight (LOS).

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Evaluation of codebook design Using SCMA Scheme Based on A_(n) and D_(n) Lattices

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Intelligent Automation & Soft Computing 2023年第3期35卷 3037-3048页

作者： G.Rajamanickam G.Ravi Department of ECE Knowledge Institute of TechnologySalem637504India Department of ECE Sona College of TechnologySalem636001India

The sparse code multiple access(SCMA)scheme is a Non-Orthogonal Multiple Access(NOMA)type of scheme that is used to handle the uplink com-ponent of mobile communication in the current generation.A need of the 5G mobile network is the ability to handle more *** accommodate this,the SCMA allows each user to deploy a variety of sub-carrier broadcasts,and several consumers may contribute to the same frequency using superposition *** SCMA approach,together with codebook design for each user,is used to improve channel efﬁciency through better management of the available ***-ever,developing a codebook with a greater number of value sets is still another *** enhanced techniques of encoding and decoding for 5G networks,mapping the multidimensional constellations in the SCMA system plays a signif-icant role in improving the system performance and enhancing the overall system *** creation of a codebook utilizing the SCMA approach in con-junction with the lattice theory is suggested in this *** prototype is shaped using a popular lattice,such as A n and D n,as the ***,from the primary lattice constellation,the multidimensional complex mother constellation with the most noticeable variance in power is *** lattice-based cod-ing is generated by combining the codebooks with the mother constellation,and the codes in the matrices are mapped by rotating the constellations in this *** suggested technique,in conjunction with the investigation of novel SCMA codebook sets,provides improved performance in terms of Bit Error Rate(BER)and complexity with regard to Signal to Noise Ratio(SNR).Finally,the bit error rate is reduced for various SNRs during transmission in the channel.

关键词： 5G NOMA SCMA lattice coding codebook design bit error rate

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codebook design using improved particle swarm optimization based on selection probability of artificial bee colony algorithm

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Journal of Chongqing University 2014年第3期13卷 90-98页

作者：浦灵敏胡宏梅 Chien-shiung Institute of Technology

In the paper, a new selection probability inspired by artificial bee colony algorithm is introduced into standard particle swarm optimization by improving the global extremum updating condition to enhance the capability of its overall situation search. The experiment result shows that the new scheme is more valuable and effective than other schemes in the convergence of codebook design and the performance of codebook, and it can avoid the premature phenomenon of the particles.

关键词： vector quantization codebook design particle swarm optimization artificial bee colony algorithm

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A codebook design Scheme Based On Ant Colony Clustering

A Codebook Design Scheme Based On Ant Colony Clustering

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作者： Hu Hongmei (Department of Computer Engineering,Chien-shiung institute of technology,TaiCang Jiangsu 215411,China)

A new improved ant colony codebook design scheme is proposed by adopting frequency sensitivity measure in original basic ant colony *** codebook design optimization rule is adopted in the new *** the scheme decreases the probability of choosing the same cell by increasing the distortion measure,the randomization of choosing cell is *** scheme can avoid receiving a local optimization solution,and enhance the global search *** experiment result shows that the new scheme is more valuable and effective than other schemes in the convergence of codebook design and the performance of codebook.

关键词： ant colony algorithm vector quantization codebook design clustering

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A codebook design Scheme Based On Ant Colony Clustering

A Codebook Design Scheme Based On Ant Colony Clustering

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2008年中国高校通信类院系学术研讨会

作者： Hu HongMei Department of Computer Engineering,Chien-shiung institute of technology,TaiCang Jiangsu,215411

＜正＞A new improved ant colony codebook design scheme is proposed by adopting frequency sensitivity measure in original basic ant colony *** codebook design optimization rule is adopted in the new *** the scheme decreases the probability of choosing the same cell by increasing the distortion measure,the randomization of choosing cell is *** scheme can avoid receiving a local optimization solution,and enhance the global search *** experiment result shows that the new scheme is more valuable and effective than other schemes in the convergence of codebook design and the performance of codebook.

关键词： ant colony algorithm vector quantization codebook design clustering

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Joint Processing Precoding for Coordinated Multi-Point Transmission in LTE-A

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ZTE Communications 2010年第1期8卷 36-39页

作者： Wei Ning Li Shaoqian Yue Gang National Key Laboratory of Communications University of Electronic Science and Technology of China Chengdu 611731 P. R. China

Coordinated Multi-Point （CoMP） transmission is a technology targeted for Long Term Evolution Advanced （LTE-A）. It is designed to reduce cell-edge interference, improve cell-edge spectrum efficiency and enlarge effective cell-edge coverage by means of multi-point coordination including coordination between Remote Radio Units （RRUs） within an eNodeB, coordination between an eNodeB and its relays, and coordination between eNodeBs. The Joint Processing （JP） technique for CoMP can maximize system performance, which is achieved mainly with channel information-based precoding algorithms. Precoding methods perform differently in various CoMP scenarios. Currently, research focuses on compressing the feedback and optimizing codebook design in order to optimize precoding algorithms.

关键词： system performance codebook design CoMP technology effective research in order feedback coverage improve focuses means Long

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