A METHOD AND APPARATUS FOR SENDING INFORMATION VIA SILENT SYMBOL CODING OVER UNDER-UTILIZED CHANNELS IN WIRELESS SYSTEMS

摘要

A method and apparatus is disclosed herein for sending information over under-utilized channels in wireless systems. In one embodiment, a method for use in a cellular system in which a channel allocated to a primary user is underutilized at times, comprises: creating a unique 0- 1 valued permutation code to transmit bits of a secondary user on a channel of the primary user; creating one or more codewords based on a first set of symbols to be transmitted for the primary user and the permutation code; and transmitting the one or more codewords on the channel.