Analysis of Compressed Sending Time-Frequency Training OFDM for Improved Performance of the System
Sudha Kushwaha1, Sourabh Pandey2

1Sudha Kushwaha, Research Scholar, Acropolis Institute of Technology and Research, Bhopal (Madhya Pradesh). India.
2Prof. Sourabh Pandey, Acropolis Institute of Technology and Research, Bhopal (Madhya Pradesh). India.
Manuscript received on 09 April 2016 | Revised Manuscript received on 16 April 2016 | Manuscript Published on 30 April 2016 | PP: 30-34 | Volume-5 Issue-11, April 2016 | Retrieval Number: K22930451116/2016©BEIESP
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Abstract: Orthogonal frequency division multiplexing is widely recognized as the one important technology in broadband wireless communication systems. In wireless communication orthogonal frequency division multiplexing render higher spectral efficiency as well as enhanced performance over fast fading channel. The time domain synchronous orthogonal frequency division multiplexing also offers enhanced spectral efficiency compared to cyclic prefix orthogonal frequency division multiplexing. But interference cancellation problem degrades performance loss in high speed communication channel. The compressed sending based channel estimation increases the spectral efficiency by using time delay and reducing number of pilot symbols. This paper proposes a new scheme called compressed sending time frequency training orthogonal frequency division multiplexing. This scheme uses training information in time and frequency domain. The simulation shows that the proposed scheme outperforms TFT orthogonal frequency division multiplexing, cyclic prefix orthogonal frequency division multiplexing and TDS orthogonal frequency division multiplexing in high speed mobile environments.
Keywords: Wireless, Frequency, Channel, Multiplexing, Pilot, Training

Scope of the Article: Wireless