INTERFERENCE SUPPRESSING OFDM SYSTEM FOR WIRELESS COMMUNICATIONS

摘要

An IS-OFDM system for point-to-point wireless communications that suppresses narrow-band interference comprises an IS-OFDM transmitter and an IS-OFDM receiver, wherein a transmitted signal comprises a plurality of subcarriers, and further wherein each subcarrier contains more than one and potentially all symbols transmitted in a given frame. The IS-OFDM transmitted signal is at a data rate that is equal to the data rate of the input data stream via the use of P/S converters.

主权项

1. An interference suppression orthogonal frequency division multiplexed system, comprising:
an interference suppression orthogonal frequency division multiplexed receiver, wherein the interference suppression orthogonal frequency division multiplexed receiver comprises:
a serial-to-parallel converter for processing a received signal to produce a plurality of parallel data streams;a transform module for applying a transform function to the plurality of parallel data streams to produce a plurality of parallel complex data streams;a decoder mapper module for applying a demapping function to the plurality of parallel complex data streams to produce a plurality of parallel demapped data streams;a parallel-to-serial converter for processing the plurality of parallel demapped data stream to produce a serial data stream;a plurality of despreaders, each despreader of the plurality of despreaders coupled to the parallel-to-serial converter, each despreader of the plurality of despreaders operates by applying a code sequence to the serial data stream resulting in a set of parallel despread data streams;a plurality of accumulators for summing the set of parallel despread data streams to produce a plurality of accumulated data streams; anda parallel-to-serial converter for processing the plurality of accumulated data streams to produce a recovered data stream.