關(guān)于simu1: 在simlink運(yùn)行之前的初始化過程中,完成了信道時(shí)延和幅度的估計(jì),多徑合成權(quán)系數(shù)估計(jì) 多徑合成采用可選EG/MR/MMSE合成 信道可選白噪聲信道AWGN和IEEE80.215.3a UWB標(biāo)準(zhǔn)信道模型(CM1-CM4)但為了簡化, 這里采用了IEEE80.215.3a給出了信道模型中的仿真數(shù)據(jù)包(如果你是作超寬帶的,信道模型程序和數(shù)據(jù)可從IEEE80.215.3a網(wǎng)站獲取) 和大部分仿真一樣,模型中的Eb/No指的是單比特信息符號(hào)攜帶的能量和噪聲的比例,監(jiān)督的講,在AWGN信道中,Eb/No為4.31db時(shí),誤碼率0.01 關(guān)于zslsimu直接運(yùn)行simuuwb.m可看到結(jié)果) 顯然和simu1一樣,只是增加了.m文件,修改.m文件中的重要參數(shù):多徑數(shù)、PN序列長度、PN序列、單個(gè)信息碼元寬度Tb(單位ns)、每個(gè)脈沖寬度Tc(單位ns)、系統(tǒng)的仿真精度Ts(單位ns)、仿真時(shí)間 chanidx=1:1是因?yàn)榭紤]信道數(shù)據(jù)文件太大,不好上傳,想得到精確的仿真,同一個(gè)信道類型(chantype),最好仿真100次實(shí)現(xiàn),信道文件可由UWB標(biāo)準(zhǔn)組織下載
標(biāo)簽: simlink simu1 運(yùn)行 初始化
上傳時(shí)間: 2015-08-14
上傳用戶:3到15
用MATLAB生成bpsk信號(hào),并通過AWGN信道的仿真。
上傳時(shí)間: 2014-01-12
上傳用戶:chenjjer
用MATLAB生成QPSK信號(hào),并通過瑞麗信道和AWGN信道的仿真。
上傳時(shí)間: 2015-08-23
上傳用戶:it男一枚
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
本程序是針對WCDMA,Rayleigh仿真進(jìn)行的simulink仿真,附帶很多個(gè)相關(guān)程序,還有關(guān)于信道仿真的問題的闡述,很好的!大家可以
上傳時(shí)間: 2013-12-01
上傳用戶:123456wh
使用Matlab,編程實(shí)現(xiàn)Turbo碼的編碼及其解碼算法,并給出在AWGN信道下該信道編碼的性能
標(biāo)簽: Matlab
上傳時(shí)間: 2014-11-22
上傳用戶:as275944189
對于移動(dòng)通信系統(tǒng)主要有兩類衰落:大規(guī)模衰落和小規(guī)模衰落。大規(guī)模衰落表示由于大范圍內(nèi)移動(dòng)而引起的平均信號(hào)能量的減少或路徑損耗。而小規(guī)模衰落則表現(xiàn)為兩種機(jī)制:信號(hào)的時(shí)延擴(kuò)展和信道的時(shí)變特性。對于無線應(yīng)用,信道的時(shí)變特性是由于發(fā)射機(jī)和接收機(jī)相對移動(dòng)而造成傳輸路徑的變化。這些傳播條件的變化速率影響衰落率。如果存在大量反射路徑而不存在視行信號(hào)分量,此時(shí)的小規(guī)模衰落稱為瑞利衰落(Rayleigh fading),接收信號(hào)的包絡(luò)由瑞利概率分布函數(shù)統(tǒng)計(jì)描述。這種衰落也就是這次實(shí)驗(yàn)我準(zhǔn)備研究的
標(biāo)簽: 大規(guī)模 信號(hào) 模 移動(dòng)通信系統(tǒng)
上傳時(shí)間: 2013-12-23
上傳用戶:gmh1314
A system simulation environment in Matlab/Simulink of RFID is constructed in this paper. Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment, AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by changing the coding method,parameters of building blocks,and operation distance.Finally,some simulation results are presented in this paper.
標(biāo)簽: environment constructed simulation Simulink
上傳時(shí)間: 2014-01-09
上傳用戶:zhangliming420
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(shí)間: 2015-12-30
上傳用戶:225588
bpsk 調(diào)制,awgn信道,ldpc 系統(tǒng)編碼,概率域解碼
上傳時(shí)間: 2014-01-17
上傳用戶:15736969615
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