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79 Threads found on Coding Ofdm
Hello All , i recently started working on MIMO ofdm underwater acoustic communication. i need some basic codes for any technique like channel estimation, equalization or coding.. if someone can send me some codes regarding the whole MIMO ofdm system or any specific technique in the system, i would be grateful. if the codes are (...)
I have a simulink model (using Comm. Toolbox / DSP blocks) I have built that will do QAM modulation just fine with pulse-shaping (using Root-Raised Cosine Filter). I'm trying to get a Baseband signal to RF for time-domain analysis for a RF PA. I need an LTE like signal with a high PAPR. So I am using an ofdm modulation on 16-QAM coding. 18MHz sy
1-I think If there are few carriers QAM is better in term of complexity,Recovery,coding, etc. but if there are many carriers and the bandwidth cannot handle them, ofdm is the single choice.This is my personal opinion, someone expert may say something more concrete. 2-There are many modulated signal sources in ADS.You have to do "Trans
Dear all I am doing a project on video streaming in Long Term Evolution(LTE). I have taken ultrasound sample as my input video is of size 36 mb i used H.264 coding standard compressed it to 355kb as a resultant bitstream, from this step i could not procced further my objective is to carry that 355kb bitstream.mat file in LTE ofdm . Please help m
Dear all, It is known that SC-FDE outperforms ofdm in uncoded systems over fading channels. However, with frequency interleaving and coding the latter is able to perform close to the former. My question is: what if the channel is relatively static, but there is an ICI in the system? How coding will affect the performance in this case? (...)
Hello all, Why when we use space-time block coding (STBC) with single-carrier frequency-domain equalization (SC-FDE) we use a permutation matrix, while we don't use it in case of orthogonal frequency division multiplexing (ofdm)? Thanks
% No.of Carriers: 512 % coding used: Convolutional coding % Single frame size: 768 bits % Total no. of Frames: 800 % Modulation: 128-QAM % No. of Pilots: 32 % Cylic Extension: 25%(16) close all clear all clc %% % Generating and coding data t_data=randint(80000,1)'; x=1; si=1; %for BER rows %% for d=1:800; data=t_data(x:
Hello.. i am newto this coding am unable to write the code for expectng a help frm u plz help in taking further step .hoping for positive reply...
I m doing project on papr reduction by using reduced complexity pts scheme...I completed the coding for pts and reduced complexity I want to compare the ber of ofdm after using PTS and reduced complexity pts..can anyone help me with this..I m in a big problem..please help me.. thank you in advance..
Plz help me out in matlab coding of channel estimation in ofdm syster Speacially LS ESTIMATOR and MMSE ESTIMATOR. Also tell me how to insert pilot symbols in data sequence and how to tap the channel. Plz help me I need it urgently.
please send me mimo ofdm matlab coding my email id is
Hi, I am implementing an ofdm modulation scheme as part of an LTE project in C/C++ and then testing it on a DSP board. I am using turbo coding with soft decision decoding. On the receiver side of the LTE system, I need to perform a soft demodulation (16-QAM and 64-QAM) so I can feed real values to the turbo coder for decodin
Im doing a matlab code on ofdm using concatenated RS-CC. The coding is RS(255,239,8) act as inner coding and rate 1/2 constrain length 7 polynomial (171,133) convolutional code act as outer coding. I couldn't get after reed solomon encoding. can u plz help me to write this coding.
Can anyone help me with the MATLAB code for a multiuser MIMO-ofdm cellular systems?? plzzz
hi plz snd me complite ofdm model+ qpsk+rs coding+awgn channel for communication rather thn one availble in maths ofdm_gito cz this is not working properly plz help me my mail id is thanks & kind regards ashutosh
Hello, I am a Master student doing project in a physical layer of LTE. I need to use MIMO-ofdm matlab coding to simulation for LTE. Does anyone have it matlab coding then please help me. Thank you, Nishidh
you can start to make ur own block diagram e.g:input-->channel coding-->modulation--STBC ENCODER-->ofdm MODULATOR-->guard interval-->fading etc and you can make it easily
Have anyone done project in MIMO-ofdm using semi-blind in urgent need of codings....if anyone have just mail me to Plz help me..or if atleast know how to proceed,plz say...
I have done coding for turbo coded ofdm with a fading channel. Now what other parameter can be considered apart from PAPR as the BER curve of the code and the PAPR curve are similar in nature. Suggest some easy parameter as it has to be inserted in the code. Please suggest some base paper if any. Thanks