EECE496 projects from previous terms
Student: Ali Sahebnassagh (September-December 2006)
Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier communications technology which has seen widespread deployment in wideband wireless and wireline communications systems, such as 802.11 a/g, ADSL, and Ultra-Wideband radio. Due to the frequency-selective nature of the communications channel, substantial gains can be realized by employing different modulation schemes in each subcarrier of the OFDM system.
This project will consist of the investigation of several bit-loading algorithms, which will select the optimal modulation scheme for each OFDM subcarrier based on minimizing the resulting error rate of the overall system. The classes of algorithms will be
- the optimal loading algorithm for this problem,
- several suboptimal but computationally efficient algorithms from the published literature on the topic,
- (if time permits) algorithms based on stochastic global optimization techniques such as simulated annealing.
Required skills for this project are
- background in Fourier transform and communication systems,
- strong mathematical skills,
- experience in MATLAB programming, and
- ability to conduct independent research.
Project: Effect of Quantization on OFDM Receivers
Student: Shane Wong (January-April 2006)
Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for high data-rate communication over wideband wireless and wireline channels. OFDM is used in such standards as IEEE 802.11a/g (Wireless LAN) and in DSL modems. It is currently being considered for use in Ultra-Wideband Radio (IEEE 802.15 TG3a -- High Data Rate Personal Area Networks).
This project will consist of:
- Building a simulator of an OFDM system (transmitter and receiver) in Matlab and/or C/C++.
- Studying the effect of A/D quantization at the receiver on the bit-error rate performance of the OFDM system.
- Considering various different modulation schemes (eg BPSK, QPSK, 16-QAM) and the effects of quantization on each.
Project: MATLAB Implementation of DS-UWB Simulator
Student: Tim Chua (January-April 2006)
Direct-Sequence Ultra-Wideband (DS-UWB) is a promising technology for the future IEEE 802.15 TG3a (High Data-Rate Personal Area Networks) standard. This technology is currently being studied by several graduate students in the Communications group at UBC.
This project will consist of:
- A study of the DS-UWB standard proposal and other research literature in order to gain an understanding of the system architecture.
- Building a simulator of the DS-UWB system (transmitter, channel model, and receiver) in Matlab (NOT Simulink).
- Studying the bit-error rate performance of the system.
Project: Diversity Performance of Channel Codes over the Relay Channel
Student: Raj Ragbotra (September-December 2005)
The cooperative relay channel is a recent model for the exploitation of the spatial channel. One user node relays information from the source to the destination which in turn improves the error rate performance due the multiple receive copies i.e. diversity gain.
In this project, channel codes will be used to explore how much information is needed from the relay to obtain the diversity gain in the system.
Download a copy of the Diversity Performance of Channel Codes over the Relay Channel milestones.