Introduction to Cosite Interference Mitigation for Mobile Platforms

The modern Software-Defined Radio (SDR) transceiver provides tremendous operational flexibility in terms of frequency band, waveform, and modulation characteristics. However, there are Radio Frequency (RF) performance trade-offs associated with such versatility. For instance, the transmit frequency response of a typical SDR exhibits significant spurious signals, harmonics, and broadband noise compared to purpose-built analog radios of the past. The receiver performance of an SDR is commonly susceptible to interference due to an open RF front end architecture lacking preselection filtering.

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