New Uplink Initial Ranging Scheme for IEEE 802.16e OFDMA Systems


Article Preview

Ranging is one of the most important processes in the uplink of the IEEE 802.16e OFDMA system. A ranging process includes the initial ranging, periodic ranging, handover ranging, and the contention bandwidth request. Initial ranging provides network entry, uplink synchronization, and system coordination. In the initial state of the transmission process, multiple users randomly transmit selected ranging code sets and BS identifies a specific user using the ranging code identification and uplink synchronization using the transmission delay estimation. In this paper, we discuss the details of the initial ranging and propose an algorithm to carry out a successful ranging process. The performance results and the comparison of computational complexity with the traditional method are also presented. It is noted the proposed algorithm can offer a better trade-off between computational complexity and performance.



Edited by:

Zhou Mark






C. S. Chen et al., "New Uplink Initial Ranging Scheme for IEEE 802.16e OFDMA Systems", Applied Mechanics and Materials, Vols. 52-54, pp. 1783-1787, 2011

Online since:

March 2011




[1] IEEE Std 802. 16TM-2004, IEEE Standard for Local and Metropolitan Area Networks - part 16: Air Interface for Fixed Broadband Wireless Access Systems. New York: IEEE, June, (2004).

DOI: 10.1109/ieeestd.2002.93575

[2] IEEE LAN/MAN Standards Committee, IEEE Standard for local and metropolitan area networks Part 16: Air interface for fixed and mobile broadband wireless access systems amendment 2: Physical and medium access control layers for combined fixed and mobile operation in licensed bands and corrigendum 1, IEEE Std 802. 16e-2005 and IEEE Std 802. 16-2004/Cor 1-2005, (2006).

DOI: 10.1109/ieeestd.2006.99107

[3] X. Fu and H. Minn, Initial uplink synchronization and power control (ranging process) for OFDMA systems, in Proc. IEEE Conf. Global Communications, Dec. (2004).

DOI: 10.1109/glocom.2004.1379118

[4] Doo hwan Lee and Morikawa H., Performance Analysis of Ranging Process in IEEE 802. 16e OFDMA Systems, Int. Conf. Wireless and Mobile Computing, Networking and Communications, pp.8-10 Oct. (2007).

DOI: 10.1109/wimob.2007.4390810

[5] Rec. ITU-R M. 1225, Guidelines for Evaluation of Radio Transmission Technologies for IMT-2000, (1997).

In order to see related information, you need to Login.