A performance study of turbo coding in a WI-FI system based on IEEE 802.11a WLAN | |
| Author | Kitisak Akkarat |
| Call Number | AIT RSPR no. TC-03-26 |
| Subject(s) | Wireless communication systems Local area networks (Computer networks) IEEE 802.11 (Standard) |
| Note | A research submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-03-26 |
| Abstract | IEEE 802.lla is the next generation wireless local area networks (WLANs) supporting high data rate transmissions. At such high data rates, multipath is a major problem for radio based data transmission within building and cause of degradation of system performance. In order to increase reliability of system, powerful error control coding schemes is required. Turbo codes are a well known coding scheme, which has a very good error correction capability close to the theoretical performance limits. This remarkable performance is due to the iterative use of two soft-in/soft-out decoders and higher interleaving gain. In the research study, perfo1mance of turbo code OFDM based on IEEE 802.11 a WLAN standard is studied over A WGN and Rayleigh fading channel. Performance of the proposed system is investigated in term of bit error rate (BER) against signal to noise ratio (Eb/N0 ). Furthermore, the proposed system is also compared with convolutional code adopted in IEEE 802.11 a WLAN standard. From the simulation results, it is shown that employing turbo code with higher number of iterations the overall system performance can be improved significantly. Results also indicate that turbo code outperform the performance of the convolutional code specified in the standard. Moreover, turbo code gives the less performance degradation compared with convolutional code in case of no guard interval inse1iion. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-03-26 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Ahmed, Kazi M.; |
| Examination Committee(s) | Erke, Tapio J. ;Teerapat Sanguankotchakom; |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2003 |