Design of Low Power Integrated Radios for Emerging Standards by Mustafijur Rahman & Ramesh Harjani

Author:Mustafijur Rahman & Ramesh Harjani
Language: eng
Format: epub
ISBN: 9783030213336
Publisher: Springer International Publishing

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Adjacent channel rejection is the ratio of the interfering signals power in the adjacent channel to the desired signal power. According to the 802.15.6 standard specification [4], the desired signals strength should be set 3 dB above the rate dependent sensitivity and the power of the interfering signal should be raised until a 10% packet error rate has been achieved for physical layer service data unit (PSDU) length of 255 octets. At data rate of 971.4 kbps the specified ACR is 9 dB, sensitivity is −83 dBm, and the SNR required is 11.2 dB. We provide a margin of 10 dB to account for other non-idealities and therefore target an SNR of 21.2 dB. This sets a limit for third order intermodulation (IM3) corruption to be −21.2 dB. We represent the desired, adjacent, and alternate channel by A0 0t, A1 1t, and A2 2t, respectively. Therefore, IM3 corruption [17] may be expressed as follows in (3.2):

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