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19 Threads found on Bpsk Linear
hello guys, i have got to simulate bpsk & QPSK modulator with AWGN in Matlab WITHOUT using simulink. I need your help guys.A code would really help.Thanx in advance.
hi all we were given simulation of bpsk as an assignment. what it did was to generate bpsk symbols(-1 1) and after upsampling and filtering(pulse shaping) transmitted to receiver. i want to know where is the actual modulation happening in it. where is the carrier frequecy modulated by modulating signal. also if a carrier(sinusoid) is modulate
Hi, i have a problem with calculating the bit error probability of bpsk modulation using the matched filter: As it's known well the bit error probability of bpsk (with matched filter at the receiver) can be written as: P(e) = ?*erfc(√SNR) My problem is that from an article i've read that if the matched filter output is reduced by a f
you can find abook named CDMA RF System Engineering at just search Contents Preface xv Acknowledgments xix 1 Introduction 1 1.1 Motivation 1 1.2 Multiple Access Using Spread Spectrum 2 1.3 Applications of DS-SS in Mobile Communication 9 2 Radio Propagation 13 2.1 Link Analysis 13 2.2 Propag
First of all the power class of the amplifier is dependable by the type of the modulation that is transmitting. AM modulation and some types of digital modulation (bpsk, QPSK, OFDM, QAM, etc) requires linear amplification, and the PA shall be in a linear class (A or AB). FM modulation and some types of constant envelope digital modulation (...)
I am a newbie on rf pa design, only read some books&papers without any actual experience, Here are my questions 1. Some pa use this structure: rf input -> bandpass sigma-delta modulator -> Class S amplifier(PWM) -> bandpass filter As above, if input is audio frequency, this method is called Class-D PA, right? In rf, some amplifiers with ab
OFDM is a multicarrier signal and looks like a ?bunch? of narrowband sub-carriers (e.g. in 802.11a are 52) transmitted in parallel at different frequencies. In 802.11a they are spaced 312.5 kHz apart from the same source. The four Pilots are modulated bpsk and he other 48 are modulated with bpsk, QPSK, 16QAM or 64QAM, depend by the speed of data.
Currently I am designing a bpsk demodulator uses Costas Loop. The IF signal is 10.7 MHz. So based on this, I wish calculate the loop filter bandwidth and the capture and lock range by formula. Anyone know the formulae? Thanks!
The Iterative Solutions Coded Modulation Library (ISCML) is an open source toolbox for simulating capacity approaching codes in matlab. It has been developed by Matthew Valenti. It is licensed as free software under the lesser GPL license. The toolbox contains support for the followi
Hi, If you have some simulink models such as AM, FM, bpsk, FSK modulators and demodulators, please upload them or email them to me. Best Regards, Ahmed
hi i need some help, im working with adaptive equalizer on simulink, LMS linear Equalizer, CMA equalizer, DFE, and something like that. ok, there's no problem in simulink, my problem is from simulink to DSP, im workin with C6713. simulink generate and build the project in my DSP, but, i dont know how to plot in my DSP C6713. in my equalizer i
There are so many class types for RF PA.Some of them are linear such as A,AB;some of them are like switch type,such as E.How to choose the class type for power amplifier?Does it depend on modulations or something else?Say,for bpsk,lienarity is easy to achieve,so we can use Class E;for QAM64,linearity is more strict,so we should use Class A (...)
The key questions are: 1. How many power do you want to be sent to antenna? 20dBm?30dBm?40dBm? 2. your modulation scheme? constant envelope modulation(MSK/FSK etc.) or linear modulation(bpsk/
hi refer these post s Regards Mathuranathan
Please put up a model of what you are trying to do. I'd also suggest that you start with bpsk, figure this problem out and go back to 16-QAM
Actually sir, the formula of the received SNR over flat-fading channel is \frac{P|h_{sd}|^2}{ N_0\,W}=\frac{E|h_{sd}|^2}{ N_0}. Now for N_0 problem, you can define using MATLAB syntax the SNR, E/N_0 as: SNRdB=0:2:20 % in dB scale SNR=10.^(SNRdB./10)% in linear scale and continue using the linear
I use the following formula to generate noise in AWGN bpsk and QPSK , but it failed in QAM16,QAM256 Any suggestion , why it failed? Es = Rc * log2M*Eb σ2 = No/2 Rc : Coding rate =1 M : constellation points Es: energy per symbol Eb: energy per bit σ : Standard deviation No : noise spectral; Eb/No (bpsk) = 1/2σ2 Eb/No
hi, i had done plot graph BER cooperative communications with using QAF (Quantize-Amplify and forward) protocol..i use bpsk modulation and 4 level quantization..please tell me how to use qpsk modulation with 16 level quantization..the matlab code as below..actually i dont know this code right or not, so please correct and help me..thank you c
I created a bpsk signal in Matlab and I'm wanting to extract the unwrapped phase from the instantaneous phase obtained. The detail is that the result will apply an equation to get the centered non-linear component of the instantaneous phase which is given for "phi_NL" in the code below. This nonlinear phase should be be