where X is a 2-by-N matrix with the left channel

The purpose of this practice is to intersymbol interference's effect polycystic ovaries on digital transmission investigate, to gain experience in the use of basic instrumentation for the quality of a communication link using oogdiagrame and spectrum analysis test, and a simple communication link between two computers to accomplish. 2. General instructions soldeertoerusting You need this practical. You are welcome to your own practice in this work or in pairs. The practice consists of seinmanipulering in MATLAB, using the sound card as a digital-to-analoogomsetter and analog-to-digitaalomsetter, simple circuits to a transmission channel mee to imitate, and the oscilloscope for signal analysis polycystic ovaries in the analog polycystic ovaries domain. Each student must submit his report before polycystic ovaries 12:00 on Friday, March 19, 2013. Reports should be e-mailed to Dr. HA Engelbrecht. Reports must be in Word (. Doc) or PDF format (. Pdf) submitted. Identical reports are not acceptable - each student must submit their own work. Each bank has three computers. Arrange yourself so that a few at the computer next to the window work, some at the computer next to the aisle. Keep the center open computer, and share them as you see the last part of the practice do (between-computer communication). polycystic ovaries The teacher and assistant will be on Thursday, April 12 from 14:00 to 16:30 in the second floor lab will be available to assist with the practical. Including the completion of the report, the practice not more than 3 hours to finish it. If you have 3 hours to spend practically around your work and submit. An impression mark is awarded for the practice, polycystic ovaries which contribute to your class mark for Telecommunications 414. Practical work is compulsory, and practicals to be done to a class mark will be awarded. 3. Preparation
Solder the TRS-connector terminals on three of the core wires of the telephone cable. polycystic ovaries Solder single core wires (colored braces you usually breadboard circuits used) to the other ends of the core wires, so you signals easily to a breadboard polycystic ovaries can connect. Note that the tip of the TRS-connector the left channel of a stereosein is, the middle ring is the right channel, polycystic ovaries and the rear "sleeve" is ground.
where X is a 2-by-N matrix with the left channel's samples in the first row, and the right channel's samples in the second row, Fs is the sampling frequency in Hz. Audio samples should be in the range (-1, +1) be.
Check whether your cable and audio production work correctly in MATLAB by a sine wave on the left channel and a square wave on the right channel polycystic ovaries to generate and display the waveform on the oscilloscope.
It's a handy way to a vector or matrix as a set of "weights" in another one to be repeated. Here is how you Kronecker product of two short vectors in MATLAB will calculate: polycystic ovaries
Test it, and plot X to confirm that it is correct polar-coded waveform proposal.
A binary sequence of 0s and 1s in MATLAB can be easily generated by eg. 1 1000 normaalverspreide random variables (mean 0) to generate, and then a ongelykheidstoets to:
It works because MATLAB polycystic ovaries uses the integer polycystic ovaries '1 'to the Boolean variable "which" represent (eg randn ()> 0) and '0' to the Boolean variable "false" to suggest polycystic ovaries (eg randn () <= 0).
Line coding rests on the way binary data to weights for a pulse train is converted. Polar coding used like a pulsgewig of -1 and +1 to the binary bits 0 and 1 represent. Here's a trick to MATLAB latter to get right:
In the first part of the session, a polar signal is generated with a data rate of 1102.5 bps. The signal must be sampled polycystic ovaries at 11025 Hz. Use rectangular pulses with a pulse width of 50%. First resurrect a sequence of 10 5 symbols that alternates between binary 0s and 1s. Play the signal from the computer's sound card's left channel (like for now the right channel zero), and confirm that the line coding the correct waveform and the pulse width. Now generate a signal that polar random binary data is encoded. Take the FFT of the signal in MATLAB, and look at the signal's amplitudespektrum (plot (abs (fft (X))) amplitudespektrum to see, and remember that the FFT's monsterspasiëring Fs / N). What is the signal bandwidth to the first zero in the spectrum? Comment polycystic ovaries on the signal energy outside the bandwidth, and what it implies regarding polycystic ovaries the signal transmission. Is your chart with you theoretically expected for this pulse? Use the oscilloscope MATH / FFT function to the analogue spectrum look. Strip it me