WorldCat Identities

李强 1976-

Works: 7 works in 12 publications in 2 languages and 31 library holdings
Genres: History  Academic theses 
Roles: Author
Classifications: HG1283,
Publication Timeline
Most widely held works by 李强
Jin rong shi jiao xia de "Kang Qian sheng shi" : yi zhi qian ti xi wei he xin by Qiang Li( Book )

3 editions published in 2008 in Chinese and held by 21 WorldCat member libraries worldwide

Ben shu gong fen liang pian. Kang yong qian shi qi zhi qian de zhu zao yu bi cai gong ying, Kang yong qian shi qi zhi qian de kong zhi yu qian zang wei ji
Beijing Shi jing ji tan xing cao zuo ji zhi yu zheng ce kuang jia yan jiu = Research on the economic resilience of operating mechanism and policy framework on Beijing by Qiang Li( Book )

2 editions published in 2017 in Chinese and held by 3 WorldCat member libraries worldwide

On multiple-antenna communications : signal detection, error exponent and and quality of service by Qiang Li( )

2 editions published between 2008 and 2010 in English and held by 2 WorldCat member libraries worldwide

Motivated by the demand of increasing data rate in wireless communication, multiple-antenna communication is becoming a key technology in the next generation wireless system. This dissertation considers three different aspects of multipleantenna communication. The first part is signal detection in the multiple-input multiple-output (MIMO) communication. Some low complexity near optimal detectors are designed based on an improved version of Bell Laboratories Layered Space-Time (BLAST) architecture detection and an iterative space alternating generalized expectation-maximization (SAGE) algorithm. The proposed algorithms can almost achieve the performance of optimal maximum likelihood detection. Signal detections without channel knowledge (noncoherent) and with co-channel interference are also investigated. Novel solutions are proposed with near optimal performance. Secondly, the error exponent of the distributed multiple-antenna communication (relay) in the windband regime is computed. Optimal power allocation between the source and relay node, and geometrical relay node placement are investigated based on the error exponent analysis. Lastly, the quality of service (QoS) of MIMO/single-input single- output(SISO) communication is studied. The tradeoff of the end-to-end distortion and transmission buffer delay is derived. Also, the SNR exponent of the distortion is computed for MIMO communication, which can provide some insights of the interplay among time diversity, space diversity and the spatial multiplex gain
Qing dai ming ren zou zhe shu xi( Book )

2 editions published in 2010 in Chinese and held by 2 WorldCat member libraries worldwide

Analysis, design, and laboratory evaluation of a distributed unified power flow controller concept by Qiang Li( )

1 edition published in 2006 in English and held by 1 WorldCat member library worldwide

A single-phase dual output converter with high quality input waveforms by Qiang Li( )

1 edition published in 2003 in English and held by 1 WorldCat member library worldwide

Concurrent transmission with adaptive forwarder set by Qiang Li( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

Precisely-timed concurrent transmission(CX) is relatively new in wireless sensor network (WSN), and protocols based on CX can implement reliable and conceptually simple flooding mechanism. These protocols work well; however, they are intrinsically energy inefficient for non-flooding traffic models, because in such cases not every node needs those flooding packets, but all of them have to receive and then forward. Efforts have been spent in reducing forwarder set size for those cases, typically by removing those nodes which are not ``between" the packet source and destination so that they are ``useless". These efforts are effective, but they have to keep some unnecessary forwarders because they rely on topology information and this information is subject to network dynamics and then not precise. Here we present a new mechanism CXAFS to enhance Forwarder Selection (CXFS) protocol by further removing unnecessary forwarders. We implement 3 variants of CXAFS and evaluate them on our 27-node testbed. Results show that CXAFS can reduce forwarder set size by up to 40% and reduce duty cycle by 40%, at the expense of lower packet reception ratio(less than 10% lower). CXAFS is a feasible option when energy efficiency is top priority and packet reception ratio is not extremely important
Audience Level
Audience Level
  Kids General Special  
Audience level: 0.79 (from 0.37 for Concurrent ... to 0.94 for Qing dai m ...)

Alternative Names
李强 1976-