THE EFFECTS OF IP_2 IMPAIRMENT ON AN 802.11A OFDM DIRECT CONVERSION RADIO SYSTEM

摘要

Based on an ADS simulation, the IIP_2 requirement for a direct conversion receiver is approximately -5 dBm to meet a 10 percent PER 802.11a standard requirement if the alternative adjacent channel has -47 dBm interference for a 54 Mpbs 64QAM OFDM signal. However, if other impairments are included, such as IIP_3, I/Q mismatch, PAPR and phase noise, according to the modeling performed in this article, it is expected that a 0 dBm IIP_2 will be needed to meet the 802.11a system requirements.