Multi-point OFDM/DMT digital communications system including remote service unit with improved receiver architecture

摘要

A multi-point communications system is set forth. The communications system comprises a primary transmitter disposed at a primary site and a plurality of receivers respectively disposed at a plurality of secondary sites. The primary transmitter generates OFDM/DMT transmissions over a first number of transmission bins to transmit communication data in those bins. A transmission medium is used for transmitting the OFDM/DMT transmissions from the primary transmitter at the primary site to the plurality of receivers disposed at a plurality of secondary sites. Each of the plurality of receivers employs a unique receiver architecture that digitally processes exclusively a reduced subset of the first number of bins transmitted by the primary transmitter to recover communication data that is transmitted in the reduced subset of the first number of bins. Such a receiver architecture eliminates much of the complexity typically associated with receiving and processing a wide-band OFDM/DMT signal, thereby making the communications system subject to economical and practical implementation in applications having receivers respectively located at a large number of secondary sites.