Scientific Research Corporation

Other

Erik H Kjeldsen

Fredric Joel Harris

Alan Ray Lindsey

A wireless communication system implements Forward Error Correction ('FEC') and Interpolated Tree Orthogonal Multiplexing ('ITOM'). ITOM is a compact spectral waveform variant that uses a dyadic tree structure. The tree structure facilitates a flexible mapping of the transmit waveform to the available spectrum bandwidth on a non-contiguous and multiresolution basis. The system includes a receiver that implements a maximum likelihood (&#x201c;ML&#x201d;) synchronization scheme, which is pulse shape independent and non-data aided.

System and method for orthogonally multiplexed signal transmission and reception on a non-contiguous spectral basis

A wireless communication network that implements Circular Simplex Turbo Block Coded Modulation ('CSTBCM') Forward Error Correction ('FEC'), randomization and Wavelet Packet Modulation (&#x201c;WPM&#x201d;) is provided. The network includes a transmitter that uses an adaptive tree structure. The tree structure is pruned to avoid known signal impediments by first determining the best uniform level and then tuning in the forward direction and in the reverse direction. The network also includes a receiver that implements a maximum likelihood decision directed (&#x201c;MLDD&#x201d;) synchronization scheme. The synchronization scheme is pulse shape independent and non-data aided.

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Marietta, GA, United States of America

Erik H Kjeldsen