Effect of Variable FFT Length on the Mobile WiMAX under Coded OFDM |
Author(s): |
| Surekha Singh , Rewa Institute of Technology; Swatantra Tiwari, Rewa Institute of Technology |
Keywords: |
| WiMAX, OFDM, Wireless Communication, AWGN, Interleaving, Trellis Coding |
Abstract |
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Although the increasing high speed requirement of WiMAX network world wide its performance is required to evaluate for optimum solutions. Using convolutional coded OFDM system improves the BER performance but it is require finding the optimum OFDM parameters for best system performance. This paper focuses to evaluate the performance of Trellis coded OFDM under the AWGN channel for Mobile WiMAX application. FFT size have played a significant role in the designing of the OFDM systems. In this paper the Trellis coded interleaved OFDM system is designed and the performance is evaluated for variable FFT size for the different modulation schemes. Paper concludes that use of smaller FFT size increases the BER performance of the system. But if higher SNR is also desired for the system then higher FFT size is advantageous. The performance of the system improves using coded OFDM system for AWGN channel. |
Other Details |
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Paper ID: IJSRDV5I41292 Published in: Volume : 5, Issue : 4 Publication Date: 01/07/2017 Page(s): 1480-1483 |
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