This paper proposes a novel low peak to average power ratio (PAPR) preamble to be used in very high throughput WLAN IEEE 802.11ac 80 MHz system. Partial transmit sequence technique was exploited to obtain a novel phase rotation set. Implementing this phase rotation set into 80 MHz system of the VHT WLAN IEEE802.11ac’s preamble reduced the PAPR of the signal, significantly. It was 1. 4 dB lower than the PAPR of conventional extension of IEEE 802.11ac 80 MHz and even 1.6 dB lower than the PAPR of HT WLAN IEEE802.11n 40MHz.

Topics
Electrical properties and parameters
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