Coaxial feed structures are widely used in ultra-wide band antennas . This paper modeled the characteristic of the monopole antenna feeded by coaxial line by FDTD in the time-domiain,which showes that . Firstly, it introduced the theory of the arithmetic and the particularly realization in the calculation then it described the use in the time-domain finally it analysed several characteristics of the monopole antenna. The arithmetic used in the microstrip antenna is also a quick and economical way to design the antenna.
标签： structures ultra-wide antennas Coaxial
上传时间： 2016-06-28
上传用户：朗朗乾坤
ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white
标签： transmission simulator Channel inputs
上传时间： 2016-07-22
上传用户：kelimu
IN highly scattered enviroment，the Capacity of a MIMO channel with nt transmit antenna and nr recieve antenna is analyzed. The power in parallel channel (after decomposition) is distributed as water-filling algorithm
标签： enviroment scattered highly IN
上传时间： 2014-01-25
上传用户：SimonQQ
The following is a list of MATLAB codes which includes the radar absorbing material design, the antenna pattern, the observation points generation, and the amplitude error and phase error calculations.
标签： following absorbing the includes
上传时间： 2014-01-04
上传用户：l254587896
contains pdf documents for MIMO in wirless communications, MI_NLMS adaptive beamforming algorithm for OFDM system, narrowband beamforming algorithm for smart antenna
标签： communications beamforming algorithm documents
上传时间： 2014-01-06
上传用户：leehom61
contains documents related to adaptive beamforming algorithms for Wideband Code Division multiple access and a research article on circular patch antenna for C band altimeter system
标签： beamforming algorithms documents contains
上传时间： 2014-09-04
上传用户：youlongjian0
implement basic routines in Matlab and Octave (currently using Matlab R13) for simulating adaptive beamforming and filtering for antenna arrays.
标签： Matlab simulating implement currently
上传时间： 2014-01-03
上传用户：851197153
m序列的生成器，rake接受，简单易用，希望对大家有帮助。。。
上传时间： 2017-06-06
上传用户：xlcky
GNU_Radio GNU radio is a free/open-source software toolkit for and the content is controlled by a handful of organizations. Cell building software radios, in which software defines the phones are a great convenience, but the features your phone transmitted waveforms and demodulates the received supports are determined by the operator s interests, not yours. waveforms. Software radio is the technique of getting code A centralized system limits the rate of innovation. Instead of as close to the antenna as possible. It turns radio hardware cell phones being second-class citizens, usable only if problems into software problems.
标签： open-source GNU_Radio software toolkit
上传时间： 2017-06-27
上传用户：拔丝土豆
In 揚erformance of multi-carrier DS CDMA Systems?we apply a multi-carrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multiple carriers, rather than a single carrier. The receiver provides a correlator for each carrier, and the outputs of the correlators are combined with a maximal-ratio combiner. This type of signaling has the desirable properties of exhibiting a narrowband interference suppression effect, along with robustness to fading, without requiring the use of either an explicit RAKE structure or an interference suppression filter.
标签： multi-carrier erformance signaling technique
上传时间： 2017-07-31
上传用户：宋桃子
