ZP-CI/OFDM: A Power Efficient Wireless Transmission Technology |
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| Authors: | Pei Gao Xiaohu Chen Jun Wang |
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| Affiliation: | National Key Laboratory of Science and Technology on Communications, the University of Electronic Science and Technology of China |
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| Abstract: | Low power efficiency is a deficiency in traditional Orthogonal Frequency Division Multiplexing (OFDM) systems. To counter this problem, a new wireless transmission technology based on Zero-Padding Carrier Interferometry OFDM (ZP-CI/OFDM) is proposed. In a ZP-CI/OFDM system, transmission symbols are spread to all OFDM subcarriers via carrier interferometry codes. This reduces the Peak-to-Average Power Ratio (PAPR) that traditional OFDM suffers and also exploits frequency diversity gain. By zero-padding at the transmitter, advanced receiver technologies can be adopted for ZP-CI/OFDM so that frequency diversity gain can be further utilized and the power efficiency of the system is improved. |
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| Keywords: | power efficiency carrier interferometry orthogonal frequency division multiplex zero-padding frequency diversity gain |
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