This paper examines the asymptotic (large sample) performance of a family of non-data aided feedforward (NDA FF) nonlinear least-squares (NLS) type carrier frequency estimators for burst-mode phase shift keying (PSK) modulations transmitted through AWGN and flat Ricean-fading channels. The asymptotic performance of these estimators is established in closed-form expression and compared with the modified Cram`er-Rao bound (MCRB). A best linear unbiased estimator (BLUE), which exhibits the lowest asymptotic variance within the family of NDA FF NLS-type estimators, is also proposed.
標(biāo)簽： performance asymptotic examines non-data
上傳時間： 2015-12-30
上傳用戶：225588
Aiming at the application of passive trackinn based on sensor array, a new passive trackinn usinn sensor array based on particle filter was proposed. Firstly, the“fake points" could be almost entirely and exactly deleted with the aids of the sensor array at the expense of an additional sensor. Secondly, considered the fact that the measurements notten from each array were independent in passive trackinn system, a novel sequential particle filter usinn sensor array with improved distribution was proposed. At last, in a simulation study we compared this approach a壇orithm with traditional trackinn methods. The simulation re-sups show that the proposed method can nreatly improve the state estimation precision of sensor array passive trackinn system.
標(biāo)簽： trackinn passive application Aiming
上傳時間： 2015-12-31
上傳用戶：trepb001
Returns weighted percentiles of a sample given the weight vector w ％ The idea is to give more emphasis in some examples of data as compared to ％ others by giving more weight. For example, we could give lower weights to ％ the outliers. ％ The motivation to write this function is to compute percentiles for Monte ％ Carlos simulations where some simulations are very bad (in terms of goodness ％ of fit between simulated and actual value) than the others and to give ％ the lower weights based on some goodness of fit criteria.
標(biāo)簽： percentiles weighted Returns sample
上傳時間： 2016-01-28
上傳用戶：小儒尼尼奧
Algorithms for the estimation of a channel whose impulse response is characterized by a large number of zero tap coefficients are developed and compared.
標(biāo)簽： characterized Algorithms estimation response
上傳時間： 2013-12-26
上傳用戶：manking0408
This paper presents the key circuits of a 1MHz bandwidth, 750kb/s GMSK transmitter. The fractional-N synthesizer forming the basis of the transmitter uses a combined phasefrequency detector (PFD) and digital-to-analog converter (DAC) circuit element to obtain >28dB high frequency noise reduction when compared to classicalfrequency synthesis.
標(biāo)簽： fractional-N transmitter bandwidth circuits
上傳時間： 2016-04-14
上傳用戶：er1219
Different methods for generating pyramid data structure have been analysed, these effects in image matching are compared, also a fast
標(biāo)簽： generating Different structure analysed
上傳時間： 2016-04-26
上傳用戶：LIKE
Matlab is an ideal tool for simulating digital communications systems, thanks to its easy scripting language and excellent data visualization capabilities. One of the most frequent simulation tasks in the field of digital communications is bit-error- rate testing of modems. The bit-error-rate performance of a receiver is a figure of merit that allows different designs to be compared in a fair manner. Performing bit-error-rate testing withMatlab is very simple, but does require some prerequisite knowledge
標(biāo)簽： communications simulating scripting digital
上傳時間： 2014-01-02
上傳用戶：plsee
This paper presents a low-power asynchronous implementation of the 80C51 microcontroller. It was realized in a 0.5 µ m CMOS process and it shows a power advantage of a factor 4 compared to a recent synchronous implementation in the same technology. The chip is fully bit compatible with the synchronous implementation, and timing compatible for external memory access. The circuit is a compiled VLSI-program, using Tangram as VLSI-programming language and the Tangram tool set to compile the design automatically to a standard-cell netlist. This design approach proves to be powerful enough to describe the microcontroller and derive an efficient implementation. Further, it offers the designer the possibility to explore various alternatives in the design space.
標(biāo)簽： microcontroller implementation asynchronous low-power
上傳時間： 2016-06-07
上傳用戶：冇尾飛鉈
The package contains a Reed-Solomon coding and decoding program, derived partly from Phil Karn/Robert Morelos-Zaragoza "new_rs_erasures.c". In particular the Berlekamp-Massey algorithm has not been modified. New features compared to "new_rs_erasures.c" are: - fully parameterized: code parameters (n,k,m) can be selected via command line options. - decoding optional by Euclid or Belekamp-Massey algorithm - efficient support of shortened codes - extensive verbose levels for hardware verification
標(biāo)簽： Reed-Solomon contains decoding package
上傳時間： 2013-12-11
上傳用戶：shinesyh
Of the password is: Server: "1." Client: + for the month of the date of the machine. Such as "2005/08/05", compared with the number "85" Database: "xzxq". I made the changes: 1, stations and customer-service once every 30 seconds to exchange information (to ensure continuous line) 2, computer services-an increase of the serial number 3, client-service to send the card serial number and send IP addresses to the service side 4, the desktop client by the embargo, since the definition of the icon to start the process faster (from the window Superman Code) 5, CS-shielding some function keys, but CTRL + ALT + DEL keys can not shield the hope that a revised modify these friends 6, there are some corners of Laws (such as title, etc.). Client desktop icon in the Settings page set up first class to enter FXZWN999 open on to add, delete icon button
標(biāo)簽： the password machine Client
上傳時間： 2016-06-27
上傳用戶：xsnjzljj
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