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在DAB系統中的頻率同步，載頻同步，參考一下Carrier frequency offset estimation of DAB receiver based on phase reference symbol
上傳時間： 2014-11-23
上傳用戶：songrui
The implementation of estimation and correction of carrier frequency offset of COFDM system in DAB receiver IC ASIC03
標簽： implementation estimation correction frequency
上傳時間： 2013-12-24
上傳用戶：變形金剛
Noncoherent receivers are attractive for pulsed UWB systems due to the implementation simplicity. To alleviate the noise effect in detecting UWB PPM signals, this letter proposes a simple yet flexible weighted noncoherent receiver structure, which adopts a square-law integrator multiplied with a window function.
標簽： implementation Noncoherent attractive simplicity
上傳時間： 2013-12-01
上傳用戶：wys0120
M-file uses random data which BPSK modulates a carrier to configure a BPSK UWB transmitter. The receiver demodulates the BPSK UWB carrier and the data is recovered
標簽： BPSK transmitter configure modulates
上傳時間： 2016-04-24
上傳用戶：haoxiyizhong
1， 表達式一般由操作數（operand）,運算符(operator)和界限符(delimiter)組成。操作數可以有常數，變量或者標識符。運算符分為算術運算符，關系運算符和邏輯運算符。基本界限符有左右括號和表達式結束符號。為了程序簡單，僅討論簡單算術表達式的求值問題。這種表達式只含加，減，乘，除和四則運算符，括號以及結束符‘#’。 2， 算法基本思想： 建立兩個棧：一個是操作數棧（Stack_nd），用以寄存操作數或運算結果；另一個是運算符棧（Stack_tr），用以寄存運算符和界限符。 依次讀入表達式中的字符，若是操作數則壓進操作數棧（Stack_nd），若是運算符，則與運算棧(Stack_tr)的棧頂元素比較優先級，根據比較的結果進行相應的操作。 3， 規定算符間的優先級；算符q1與q2至多是下面三種關系之一： q1<q2 q1的優先權低于q2 q1=q2 q1的優先權等于 q2 q1>q2 q1的優先權高于 q2
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上傳時間： 2013-12-21
上傳用戶：FreeSky
There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented 4] The resulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file. 6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable. 7] Run the simulation. To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray
標簽： bpsk_spread jakesmodel simulation folder
上傳時間： 2016-05-19
上傳用戶：ynsnjs
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
標簽： communications simulating scripting digital
上傳時間： 2014-01-02
上傳用戶：plsee
M-file uses random data which BPSK modulates a carrier to configure a BPSK UWB transmitter. The receiver demodulates the BPSK UWB carrier and the data is recovered.
標簽： BPSK transmitter configure modulates
上傳時間： 2013-12-30
上傳用戶：偷心的海盜
GloptiPoly 3: moments, optimization and semidefinite programming. Gloptipoly 3 is intended to solve, or at least approximate, the Generalized Problem of Moments (GPM), an infinite-dimensional optimization problem which can be viewed as an extension of the classical problem of moments [8]. From a theoretical viewpoint, the GPM has developments and impact in various areas of mathematics such as algebra, Fourier analysis, functional analysis, operator theory, probability and statistics, to cite a few. In addition, and despite a rather simple and short formulation, the GPM has a large number of important applications in various fields such as optimization, probability, finance, control, signal processing, chemistry, cristallography, tomography, etc. For an account of various methodologies as well as some of potential applications, the interested reader is referred to [1, 2] and the nice collection of papers [5].
標簽： optimization semidefinite programming GloptiPoly
上傳時間： 2016-06-05
上傳用戶：lgnf
After an introduction to the history of mobile communications, this guide considers the basics of mobile radio, the design of cellular and private radio systems, and issues of interworking with the fixed network. It then looks at the role of the mobile radio operator, the design and operation of mobile radio networks, the needs of large user groups, and relevant regulatory and government decisions. A final section focuses on career development through resolution of conflicts, understanding managerial issues, and professional vehicles.
標簽： communications introduction considers the
上傳時間： 2016-06-24
上傳用戶：nanshan
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