Method and Transmitter, Receiver and Transceiver Systems for Ultra Widebrand Communication

A method for transmitting signals, said method comprising the steps of:

• spreading, by at least one spreader, a data packet having one or more blocks to derive a spread sequence for each of said blocks and to form a spread signal;
• extending, by a sequence extender, each of said blocks in said spread signal using a predetermined number of chips to form an extended spread signal, said spread signal being received from a spreader output of said at least one spreader;
• shaping, by a pulse shaper coupled to an output of said sequence extender, said extended spread signal;
• and interleaving, in at least one interleaver, one or more modulated input signals from one or more users to form an interleaved signal, before the spreading step

A method for transmitting signals, said method comprising the steps of:

• extending, by a sequence extender, each of a number of blocks in an incoming signal using a predetermined number of chips to form an extended signal, said incoming signal comprising at least one data packet;
• spreading, in at least one spreader, said extended signal received from an output of said sequence extender to derive a spread sequence for each of said blocks to form a spread signal;
• and
• shaping, in a pulse shaper, said spread signal received from an output of said at least one spreader to provide a transmitter output signal.

A method for processing a received signal comprising the steps of:

• receiving one or more signals from one or more transmitters, said one or more received signals having an associated chip rate;
• selecting, using at least one filter, one or more input signals from the received signals;
• removing, in at least one sequence extension remover, a predetermined number of chips from at least one predetermined position of said received signal to form a modified signal;
• despreading, in at least one despreader, said received signal to a symbol rate and to form a despread signal, said symbol rate being less than said chip rate at which said received signal was spread prior to being received by said receiver, the ratio of the spread rate to the symbol rate being the processing gain of the receiver;
• and
• forming, in at least one frequency domain equalizer, a frequency equalized signal from said despread signal.