METHODS AND SYSTEM FOR GENERATING A WAVEFORM FOR TRANSMITTING DATA TO A PLURALITY OF RECEIVERS AND FOR DECODING THE RECEIVED WAVEFORM

摘要

Methods and a system are described for generating a waveform for transmitting data over a channel divided into a plurality of adjacent frequency subcarriers. One method includes receiving a plurality of data bits, each destined for a different receiver of a plurality of receivers. For each received data bit, the method further includes coding the data bit using a unique spreading code of a first set of spreading codes to generate a corresponding group of multiple copies of a data symbol. Additionally, the groups of data symbols, corresponding to the plurality of data bits, are interleaved to generate a sequence of interleaved data symbols, and the sequence of interleaved data symbols is mapped to the plurality of adjacent frequency subcarriers to generate a waveform symbol.

主权项

1. A method for generating a waveform for transmitting data to a plurality of receivers over a channel divided into a plurality of adjacent frequency subcarriers, the method comprising:
receiving a plurality of data bits, each destined for a different receiver of a plurality of receivers; for each received data bit, coding the data bit using a unique spreading code of a first set of spreading codes to generate a corresponding group of multiple copies of a data symbol; interleaving the groups of data symbols, corresponding to the plurality of data bits, to generate a sequence of interleaved data symbols; mapping the sequence of interleaved data symbols to the plurality of adjacent frequency subcarriers to generate a waveform symbol.