3 pairs of sample codes for basic net apps: . Socket server/client . start the server first . DatagramSocket . start MyDatagramSocketA first . MyDatagramSocketA receive a packet first, and then send a reply MyDatagramSocketA send a packet first, and then receive a reply. . Multicast sender/Receiver . start the Receiver first
標(biāo)簽： server Socket Datagr client
上傳時(shí)間： 2015-03-31
上傳用戶：yxgi5
This packet is a IS-95 baseband simulation for 1 data channel of 9.6 KBps rate. The simulation is written for static channel and AWGN noise. The packet include: 1) Packet Builder (Viterbi Encoding, Interleaver, PN generation) 2) Modulator (RRC filter) 3) Demodulator (Matched Filter, RAKE Receiver) 4) Receiver (HD or SD) (Deinterleaver, Viterbi Decoder). You should run "Simulation.m" function that include all modules.
標(biāo)簽： simulation baseband channel packet
上傳時(shí)間： 2014-11-09
上傳用戶：hwl453472107
Models UWB TX and RX using BPSK fifth derivative. MATLAB Release: R13 Description: This m file models a UWB system using BPSK with the fifth order derivative of the gaussian pulse with correlation Receiver and intgrator.
標(biāo)簽： Description derivative Release Models
上傳時(shí)間： 2015-05-08
上傳用戶：zhliu007
Decoding most of the infrared signals can be easily handled by PIC16C5X microcontrollers. This application note describes how this decoding may be done. The only mandatory hardware for decoding IR signals is an infrared Receiver. The use of two types is described here. Both are modular types used often by the consumer electronics industry. The first type responds to infrared signals modulated at about 40 kHz. The second responds to non-modulated infrared pulses and has a restricted range. The hardware costs of each approach will be less than two dollars.
標(biāo)簽： microcontrollers Decoding infrared handled
上傳時(shí)間： 2015-05-24
上傳用戶：ruan2570406
his packet is a IS-95 baseband simulation for 1 data channel of 9.6 KBps rate. The simulation is written for static channel and AWGN noise. The packet include: 1) Packet Builder (Viterbi Encoding, Interleaver, PN generation) 2) Modulator (RRC filter) 3) Demodulator (Matched Filter, RAKE Receiver) 4) Receiver (HD or SD) (Deinterleaver, Viterbi Decoder). You should run "Simulation.m" function that include all modules.
標(biāo)簽： simulation baseband channel packet
上傳時(shí)間： 2013-12-23
上傳用戶：zhangyigenius
This code was used for making the practical measurements in section 2.3 of my thesis. This Matlab code allows an OFDM signal to be generated based on an input data file. The data can be random data, a grey scale image, a wave file, or any type of file. The generated OFDM signal is stored as a windows wave file, allowing it to be viewed, listened to and manipulated in other programs. The modified wave file can then be decoded by the Receiver software to extract the original data. This code was developed for the experiments that I performed in my honours thesis, and thus has not been fully debugged. This is the original code developed for the thesis and so has several problems with it. The BER performance given by the simulations is infact Symbol Error Rate.
標(biāo)簽： This measurements practical section
上傳時(shí)間： 2015-09-20
上傳用戶：tedo811
This m file analyzes a coherent binary phase shift keyed(BPSK) and a amplitude shift keyed(ASK) communication system. The Receiver uses a correlator(mixer-integrator[LPF]) configuration with BER measurements comparing measured and theoretical results. The bandpass and low pass used in the Receiver are constructed using z transforms.
標(biāo)簽： keyed shift amplitude analyzes
上傳時(shí)間： 2015-09-26
上傳用戶：liuchee
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：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：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：luopoguixiong
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