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A Novel Burst Mapping Algorithm for WiMAX with DL-MAP Reduction Approach

Journal Name:

  • International Journal of Science and Engineering Investigations

Publication Year:

  • 2016

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
OFDMA is used in wideband wireless networks. Mobile WiMAX is one of these networks. In IEEE 802.16e-based mobile WiMAX network the data frame is a two dimensional time–frequency region that must be allocated to users. Firstly, the number of slots is allocated to users. Then, the allocated resources are mapped to rectangular areas in this two dimensional region. The reason is that these regions must be addressed in the first of the frame; the rectangular mapping minimizes this overhead. In this mapping, a user might receive more slots than its requirement and therefore the mapping area might be subjected to stretch and some slots might be unused. Moreover, a part of this two dimensional region is used for DL-MAP overhead. The algorithm must be optimal to minimize these wastages. It is known that finding the optimal solution for such a resource mapping problem is NP-complete [1]. Therefore, a practical optimal solution cannot be developed. In this paper we propose a new mapping scheme which efficiently maps user requirements to WiMAX. The proposed scheme has the advantage of order in column widths (number of OFDMA symbols) which help to reduce the DL-MAP overhead. This overhead reducing is very important for WiMAX frame utilization improvement.
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  • English

REFERENCES

References: 

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International Journal of Science and Engineering Investigations, Volume 5, Issue 55, August 2016 122
www.IJSEI.com Paper ID: 55516-12
ISSN: 2251-8843
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