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Hi SunnySkyguy,
Many thanks for your helpful information. I am measuring the group delay between the TX and RX inputs and it is fixed to 40 ( filter span in symbols*oversampling factor) regardless the use of preamble.
Am I measuring the delay in the right position? I would appreciate if you...
Hi guys,
I have been struggling for while with this problem and I am not able to solve it. I want to consider a single carrier system with 16 QAM with pulse shaping, until this point the system works just fine. I use a Square Raised Cosine Filter both in TX and RX and I do not get any...
Hello everyone,
I have been working on OFDM for some time and since OFDM is characterized to have out-of-band emissions due to the sinc frequency response of each subcarrier. In order to overcome this issue, I found in the literature the FS-FBMC. Basically, this waveform uses the same principle...
Hi everyone,
Could someone give me a reference to compute the theoretical BER for an OFDM system using M-Qam modulation?
I have tried to find it, but until now I just found the theoretical BER curve in a graph, but I would like to find the math expression.
Best regards,
Rodolfo
Hi everyone,
I am trying to implement a LDPC (672,336) according to the 802.15.3c standard.
I have already implement my Parity Check Matrix. However, when I put is as the parameter
of the LDPC encoder block show me this error: " Initialization commands cannot be evaluated".
Has anyone done...
Hi everyone! :)
I am trying to implement and simulate in simulink a basic OFDM system. However I have some doubts in which blocks are more suitable to use in order to get a Parallel to serial and S/P. I have tried to use the reshape block and the buffer/unbuffer, whereas the result of the PDS...
Hi!
I'm trying to study the effect of an incident wave into a wall surface which has a probe through it, using HFSS.
The goal is to study the effect of the probe analysing the E field in both sides of the wall. (like an external antenna radiating directely to the wall )
I don't know how to...
Sorry I didn´t know that, I will try to post again with other compression algorithm. Yes, I know that there is a relation between the mutual coupling effect and the grating lobes. I already tried to increase the distance between antennas, but the the total gain doesn´t increase , my doubt is if...
Hi everybody!
I'm new here, I'm finishing my studies, so I have to do a final project.
In one of my stages I have to built a array of microstrip patch antennas fed by coaxial wire (fed probe).
But after the design and simulation of the antennas in HFSS I realized that I have a problem.
The...
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