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Digital communication and modulation (Spring 2013) |
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| Course code : | EDCM-U01 | ||
| ECTS Credits : | 7,5 | Status : | Optional |
| Revised : | 30/04 2013 | Written : | 10/04 2002 |
| Placement : | 6. semester | Hours per week : | 4 |
| Length : | 1 semester | Teaching Language : | Danish if no English students are present |
| Objective : | The course presents the fundamental principles for digital communication, e.g. fixed-wire modems or wireless communication channels, as applied in wired or wireless computer networks, mobile phones, or eg. wireless systems in intelligent houses. Based on the functional blocks of a digital communication system, the fundamental principles for modulation and detection in Gaussian noise is treated. This includes the principles for the determination of the bit-error rate for a digital communication system. During the course, a selection of Matlab exercises are prepared, for simulation of parts of a communication system and a communication system as a whole. Having passed the course, the student will be able to accomplish the following, within the areas shown below: Model for Communication System. Prepare and explain the functional block in a digital communication system, corresponding to the specific course contents. Model for Communication Channel. Prepare and explain a model for a communication channel, corresponding to the specific course contents. Modulation Methods. Explain the properties of digital modulation methods, corresponding to the specific course contents. Intersymbol Interference. Explain intersymbol inteference, corresponding to the specific course contents. Prepare and explain methods for the reduction of intersymbol interference, cor- responding to the specific course contents. Detection. Prepare and explain methods for the detection of digital communication sym- bols, corresponding to the specific course contents. Performance of a Digital Comunication System. Prepare and explain a model for bit-error probability versus the energy used per bit and channel noise, corresponding to the specific course contents. Determine link budget for a selection of indoor and outdoor propagation envi- ronments, corresponding to the specific course contents. System Simulation. Prepare and explain a simulation program in Matlab for simulating a digital communication system. |
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| Principal Content : | Methods for baseband communication; modulation; PAM; bandpass communication; digital modulation using phase, frequency and amplitude, PSK, FSK, ASK, quadrature amplitude modulation QAM; additive white Gaussian noise (AWGN); model for communication channel; detection using a matched filter/correlation; coherent/non-coherent detection; inter symbol interference (ISI); raised cosine filter; adaptive equalization of the characteristics of a communication channel; bit-error probability for a communication system; introduction to the synchronization of transmitter and receiver in a digital communication system; Friis free space propagation model; the propagation exponent based model for a selection of indoor and outdoor environments; simulation of a communication system in Matlab. | ||
| Teaching method : | Sessions in class with active participation by the students. The time will be divi-ded between lectures and the students solving problems, including simulating digital communication building blocks in Matlab. | ||
| Required prequisites : | Documented knowledge corresponding to the level of DSM4. |
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| Recommended prerequisites : | Not applied | ||
| Relations : | The study module should be taken in parallel or before DCEC (Digital Coding and Error Correction). The curriculum is closely connected to DCEC which can be followed profitably together with DCM. | ||
| Type of examination : | Look under remarks | ||
| External examiner : | Internal | ||
| Marking : | 7 step scale | ||
| Remarks : | Oral examination based on a presentation of a mini project, prepared during the course, and discussion of a solution to a problem solved by the student. The problems are announced during at the beginning of the course. 7 step scale 3 steps of this marking scale are described as follows: 12 is given for the excellent presentation, which completely fulfills the course goals, with no or very few errors of marginal importance. 7 is given for the average presentation, which fulfills the course goals, with some errors in the presentation. 02 is given for the minimum acceptable presentation, which fulfills the course goals. |
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| Teaching material : | Rodger E. Ziemer, William Trantner “Principles of Communications, Systems, Modulation and Noise” John Wiley & Sons, 2010. Additional course material is handed out during the course. |
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| Responsible teacher : | John Aasted Sørensen
, jaas@dtu.dk |
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