A New Frame Structure for Scalable OFDMA Systems


A new frame structure is proposed to improve system performance under scalable bandwidth. For scalability, tone spacing and symbol period are fixed and only FFT s i ze vary with system bandwidth. For system performance, the structure supports two new subchannels; band AMC subchannels for system throughput, safety subchannels for users in cell boundary. In addition, dedicated control symbols are introduced for signaling efficiency, the first downlink symbol after preamble is used for carrying system information while the first three uplink symbols are assigned for channel quality report, ranging, and Ack/Nack of downlink data reception. Finally, a new concept of bin and tile are introduced for carrier allocations of AMC subchannels and uplink diversity subchannels, respectively. Purpose Present how the IEEE802.16d OFDMA frame structure can be enhanced for system performance. Notice This document has been prepared to assist IEEE 802.16. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.16. Patent Policy and Procedures The contributor is familiar with the IEEE 802.16 Patent Policy and Procedures <http://ieee802.org/16/ipr/patents/policy.html>, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair <mailto:chair@wirelessman.org> as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.16 Working Group. The Chair will disclose this notification via the IEEE 802.16 web site <http://ieee802.org/16/ipr/patents/notices>. Withdrawn 2004-03-11 IEEE C802.16d-04/19 1 A New Frame Structure for Scalable OFDMA Systems Inseok Hwang, Jaehee Cho, Sanghoon Sung Hun Huh, Soon Young Yoon, Panyuh Joo, Jaeweon Cho Samsung Elec. Co, Ltd.

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@inproceedings{Hwang2004ANF, title={A New Frame Structure for Scalable OFDMA Systems}, author={InSeok Hwang and Jaehee Cho and Sanghoon Sung Hun Huh and Soon Young Yoon and Panyuh Joo and Jaeweon Cho}, year={2004} }