作者： Wang, Hao-Lei;Zhong, Shun-An;Li, Guo-Feng （¹School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.3 P307-310,317

关键词： dual-modulus prescaler;fractional-N;MASH Σ-Δ modulator;ring oscillator

摘要： This paper presents a ring oscillator based fully integrated fractional-N frequency synthesizer suit for RF transceiver. MASH1-1-1 Σ-Δ modulation is i ...

作者： Luo, Yu;Wang, Yong-Qing;Wu, Si-Liang;Lan, Yong-Xiang;Ren, Peng （¹School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.1 P93-98

关键词： global positioning system(GPS);incoherent integration;phase estimation;weak signal

摘要： This article presents a study in order to solve the problem that the phase estimation cannot complete the application for weak GPS signal. Phase doubl ...

作者： Jiang, Hai-Qing;Tang, Pu-Zhao;Guan, Wen-Shuo （¹School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.11 P1183-1188

关键词： modulation parameters extraction;modulation types recognition;pulse description word ( PDW);modulation parameters extraction;modulation types recognition;pulse description word ( PDW)

摘要： Under the complex environment including both radar signals and communication signals, a signal modulation recognition proposed, based on pulse descrip ...

作者： Luo, Sen-Lin;Chen, Yan-Ying;Pan, Li-Min;Chen, Song-Jing;Han, Long-Fei;Zhao, Hai-Xiu （¹ School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.8 P876-880

关键词： diet balance index;energy nutrition curve;individual diet assessment

摘要： Generally speaking, Chinese residents\' nutrient is widely imbalanced. Ordinary people have difficulty in understanding and applying most individual d ...

作者： Lu, Ding-Hong;Li, Yang （¹ School of Information and Electronic, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.2 P203-207

关键词： hypothesis test;minimum probability of error criterion;space-time joint resolution limit;unresolved targets

摘要： Aiming at space-time snapshots received by an array antenna, the method of space-time joint resolution limit (STJRL) is studied on the basis of statis ...

作者： Tian, Li-Yu;Yuan, Yi-Dan;Li, Xiao-Yang;Lü, Jia （¹ School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.3 P311-317

关键词： decimation filter;digital down converter (DDC);field programable gate array(FPGA);image ratio;on-line reconfigurable

摘要： An on-line reconfigurable DDC of FPGA is designed and implemented in this research. It could produce automatically the optimal DDC structure and DDC p ...

作者： Lei, Jin-Liang;Chen, Hong-Mei;Wang, Ai-Hua （¹ The Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China ;² High Technology Research and Development Center of the Ministry of Science and Technology, Beijing 100044, China ;³ School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.7 P732-735

关键词： FPGA implementation;low-latency decoder;pipelining;quasi-cyclic LDPC

摘要： A hardware architecture scheme of low-latency decoder for quasi-cyclic LDPC (QC-LDPC) codes is proposed using Min-Sum decoding algorithm. It takes the ...

作者： Yang, Li-Dong;Wang, Jing;Xie, Xiang;Kuang, Jing-Ming （¹ School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China ;² School of Information Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China ;³ Fundemental Science on Multiple Information Systems Laboratory, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.11 P1171-1175

关键词： feature extraction;projection matrices;tensor decomposition;feature extraction;projection matrices;tensor decomposition

摘要： In this paper a method of speech signal feature extraction was proposed based on tensor decomposition. Speech signal was preprocessed firstly, and the ...

作者： Wang, Jun;Sun, Xin;Wang, Li （¹School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China ;²School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.7 P736-740

关键词： integer programming genetic algorithm;optimization;P code direct acquisition method

摘要： P code direct acquisition method has many parameters, such as averaging dot number, coherent integration time, non-coherent accumulation times, freque ...

作者： Gao, Fei;Zeng, Xian-Feng;Bu, Xiang-Yuan （¹School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China ;²Dalian Air Force Communication NCO Academy, Dalian, Liaoning 116600, China）

出处： Transactions of Beijing Institute of Technology 2013 Vol.33 No.4 P403-407

关键词： fountain code;frequency-hopping communication;Raptor code

摘要： Considering the features of small message size of frequency-hopping (FH) communication, an improved scheme for short-length Raptor codes is proposed i ...