rake接受的程序，對(duì)于學(xué)習(xí)cdma知識(shí)的朋友應(yīng)該有幫助
上傳時(shí)間： 2014-08-22
上傳用戶(hù)：zhuyibin
直放站的原理與應(yīng)用,直放站是隨著移動(dòng)通信的發(fā)展而出現(xiàn)的一種無(wú)線(xiàn)通信設(shè)備。直放站的大量應(yīng)用是近兩年的事情，尤其隨著CDMA 網(wǎng)開(kāi)通和GSM 網(wǎng)的深度覆蓋，制造廠(chǎng)家明顯多，各種各樣的直放站應(yīng)運(yùn)而生，直放站已經(jīng)成為無(wú)線(xiàn)網(wǎng)絡(luò)覆蓋中的重要設(shè)備。
標(biāo)簽： 直放站 發(fā)展 無(wú)線(xiàn)通信設(shè)備 移動(dòng)通信
上傳時(shí)間： 2015-10-02
上傳用戶(hù)：爺?shù)臍赓|(zhì)
在簡(jiǎn)要介紹MATLAB語(yǔ)言的基礎(chǔ)上，對(duì)使用MATLAB語(yǔ)言仿真的CDMA通信系統(tǒng)進(jìn)行描述。
上傳時(shí)間： 2013-11-30
上傳用戶(hù)：bakdesec
創(chuàng)建一個(gè)手機(jī)界面，主要完成短信的收發(fā)，利用CDMA進(jìn)行無(wú)線(xiàn)通信
標(biāo)簽： 機(jī)界面
上傳時(shí)間： 2014-01-22
上傳用戶(hù)：z754970244
西門(mén)子GPRS，ANYDATA CDMA，中信GPRS在430單片機(jī)上的驅(qū)動(dòng)程序
上傳時(shí)間： 2013-12-15
上傳用戶(hù)：450976175
這篇實(shí)驗(yàn)報(bào)告闡述了無(wú)線(xiàn)通信系統(tǒng)仿真的原理。主要完成兩個(gè)任務(wù)，任務(wù)一是BPSK調(diào)制在AWGN信道和在rayleigh信道下的性能比較，任務(wù)二 CDMA擴(kuò)頻多用戶(hù)系統(tǒng)。這篇報(bào)告介紹了相關(guān)原理，并且在附錄上有matalb源代碼及注釋。
標(biāo)簽： 實(shí)驗(yàn)報(bào)告 無(wú)線(xiàn)通信 系統(tǒng)仿真
上傳時(shí)間： 2015-11-11
上傳用戶(hù)：comua
PPP撥號(hào)上網(wǎng)協(xié)議棧，通過(guò)串口編程，實(shí)現(xiàn)PPP撥號(hào)網(wǎng)絡(luò)底層協(xié)議以及TCP/IP協(xié)議，主要用于GPRS，CDMA，電話(huà)撥號(hào)等通信領(lǐng)域
標(biāo)簽： PPP 撥號(hào)上網(wǎng) 協(xié)議棧
上傳時(shí)間： 2014-07-01
上傳用戶(hù)：天誠(chéng)24
Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.
標(biāo)簽： synchronization Carrier-phase multiplicativ approached
上傳時(shí)間： 2013-11-28
上傳用戶(hù)：windwolf2000
This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.
標(biāo)簽： investigates estimation frequency carrier
上傳時(shí)間： 2015-12-30
上傳用戶(hù)：ls530720646
這是一個(gè)學(xué)習(xí)WinSocket編程的程序，它由3部分組成，一是發(fā)送Sender的程序，另一個(gè)是接收Receiver的程序，還有一個(gè)是信道channel。發(fā)送方發(fā)送的數(shù)據(jù)需要經(jīng)過(guò)信道才能夠被接收方接收到。這個(gè)信道是一個(gè)模擬信道，可以自由設(shè)置它成為可靠或者不可靠，在不可靠時(shí)又有幾種情況。這些都是為了能夠更好地去理解數(shù)據(jù)鏈路層的編程，對(duì)學(xué)習(xí)很有幫助。
上傳時(shí)間： 2013-12-25
上傳用戶(hù)：luopoguixiong
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