| 摘要 |
<p>A coax network unit (CNU) is coupled to a coax line terminal (CLT) by a cable plant. In a discovery mode of operation the CNU receives from the CLT one or more message packets that include one or more orthogonal frequency division multiplexing (OFDM) symbols with cyclic prefixes of a first length. In a normal mode of operation subsequent to the discovery mode the CNU receives data packets comprising OFDM symbols from the CLT. The OFDM symbols of the received data packets have cyclic prefixes of a second length that is less than the first length.</p> |
