Print this pageSATCOM Waveform Development
Adaptive Filter to Mitigate NarrowBand and Multi-Path Interference
Xenotran completes SBIR Phase I to design an adaptive filtering system capable of mitigating the effects of narrowband interference and multi-path distortion on a Multi-h Continuous Phase modulation (CPM) modulated channel.
The adaptive filtering system will be based on the Least-Mean-Square (LMS) algorithm and will exploit the non-linear behavior of LMS to improve system performance. The system will also capitalize on turbo equalization techniques, iterating between equalizer and soft-input soft-output (SISO) demodulation of the quaternary, Multi-h CPM trellis to further improve system performance. Such an iterative adaptive filtering system is directly applicable to UHF SATCOM receivers, specifically receivers complying with MIL-STD-188-181B/C standards, where narrow band interference and multi-path distortion are of concern.
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