The week's pick
Reseach Article
Study of the Effect of Cyclic Prefix on Different QoS Parameters in WiMax Network
| International Conference on Communication, Circuits and Systems 2012 |
| Foundation of Computer Science USA |
| IC3S - Number 2 |
| June 2013 |
| Authors: Sayani Ghosh, Iti Saha Misra, Salil Kumar Sanyal |
| 345f8196-a0a5-4de1-9e8d-f43a80f4cb2a |
Sayani Ghosh, Iti Saha Misra, Salil Kumar Sanyal . Study of the Effect of Cyclic Prefix on Different QoS Parameters in WiMax Network. International Conference on Communication, Circuits and Systems 2012. IC3S, 2 (June 2013), 1-3.
Abstract
The Intersymbol Interference (ISI) is a common problem in high data rate communication. In OFDM transmission technique ISI is a common problem. So, Guard time length (GT) which is implemented as Cyclic Prefix (CP) to mitigate Intersymbol Interference (ISI) and to preserve orthogonality among OFDM subcarriers, plays a key parameters in OFDM. The guard time length is sufficiently greater than channel delay spread. Conventional OFDM system uses a fix GT length. This technique, however, degrades the overall spectral efficiency as well as consumes transmitter energy proportional to the length of the guard time. In this paper, the overall system performance and packet error rate (PER) are slightly improved as function of the guard time length.
References
- IEEE802. 16: IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems, 2004.
- WiMAX Forum website. Available from: http://www. wimaxforum. org.
- Andrews Jeffrey, Ghosh Arunabha, Muhamed Rias, Fundamentals of WiMAX: Understanding Broadband Wireless Networking, Prentice Hall PTR, 28. 02. 2007.
- IEEE802. 16e: IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems, 2005.
- Bhattacharyya B. , Misra I. S. and Sanyal S. Kumar, "Cyclic Prefix Based Modulation Selection using Comparative Analysis of EVM and RCE for WiMAX Network", Proc. of Int. Con on Communications in Computer and Iriformation Science (CNC-2011), Volume 142, Part 2, pp. 348-350, Mar 10-11,2011, Bangalore, India.
- Morelli Michele and Mengali Umberto, "A Comparison of Pilot-Aided Channel Estimation Methods for OFDM Systems", IEEE Transactions On Signal Processing, vol. 49, no. 12, december 2001.
- Bhattacharyya B. , Misra I. S. and Sanyal S. Kumar, "Optimization of error performance in a WiMAX transceiver using novel Adaptive Cyclic Prefix strategy," Computer and Information Technology(ICCIT), 2011 14th International Conference on , vol. , no. , pp. 245-250, 22-24 Dec. 2011.
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