ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING BURST MARKERS

摘要

A coax network unit (CNU) receives downstream bursts from a coax line terminal (CLT) and transmits upstream bursts to the CLT. The downstream bursts include start markers that indicate the beginnings of the downstream bursts and may also include pilot symbols. The downstream bursts are continuous across available resource elements in a matrix of subcarriers and orthogonal frequency-division multiplexing (OFDM) symbols. The available resource elements exclude resource elements in the matrix that carry the pilot symbols. The upstream bursts may include start markers indicating the beginnings of the upstream bursts and end markers indicating the ends of the upstream bursts. Respective upstream bursts are transmitted in respective groups of one or more resource blocks allocated to the CNU.

主权项

1. A method of data communication, comprising:
at a coax network unit (CNU) coupled to a coax line terminal (CLT):
receiving from the CLT downstream bursts comprising start markers indicating the beginnings of the downstream bursts and further comprising pilot symbols, wherein:
the downstream bursts are continuous across available resource elements in a matrix of subcarriers and orthogonal frequency-division multiplexing (OFDM) symbols, andthe available resource elements exclude resource elements in the matrix that carry the pilot symbols.