The week's pick
Reseach Article
Dynamic Channel Distribution with Power Sharing and Bit Insertion for Downlink Multiuser OFDMA
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 107 - Number 7 |
| Year of Publication: 2014 |
| Authors: Kimmi Salaria, B. Arun Kumar |
10.5120/18767-0065
|
Kimmi Salaria, B. Arun Kumar . Dynamic Channel Distribution with Power Sharing and Bit Insertion for Downlink Multiuser OFDMA. International Journal of Computer Applications. 107, 7 ( December 2014), 40-43. DOI=10.5120/18767-0065
Abstract
An imminent mobile and telecommunication system must sustain not only accepted speech services however several other benefits such as wireless multimedia, small circuit switching and packet dependent data transmission are also being considered. For the realization of the above services with an attractive modulation procedure whose properties makes it possible known as Orthogonal frequency division multiplexing access (OFDMA). And to enhance the system performance a power sharing and bit insertion technique is being investigated. There are various NP-complete and IP problems but the most bit loading in addition with subcarrier allocation problems were being formulated. Also, one more technique which was based on variable amplitude of subcarriers (VAS). We can curb the global power transmission underneath the data rate constraint and exploit the data rate constraint beneath the power constraint. With this users can be allotted to high channel gain and the result of this was efficiently improvement in spectrum utilization. Algorithm which distinctively perform power and rate optimization under some constraint known as margin adaptive and rate adaptive optimization problems respectively in Multiuser for BER =10-4 and number of subcarrier . ? 64.
References
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