Patent ID: 6748566
Filing Date: 2004-06-08
Classification: H04L

Abstract:
Apparatus for use in a transmitter in a wireless multiple access communications system comprising:an error detection encoder supplied with an input array of information bits for generating an array of error detection redundancy bits and for adding said array of error detection redundancy bits to said array of information bits to generate a first block of bits having a first prescribed number of bits; a mapper supplied with an input block of bits having a prescribed number of bits and being based on said first block of bits, and a particular user index for generating a second block of bits having said first prescribed number of bits as said first block of bits in accordance with a prescribed function of bits of said input block of bits and said particular user index, said prescribed function being a unique particular user dependent function assigned only to at least one particular user; and a modulator for modulating a transmit signal based on said second block of bits for transmission to at least one remote user receiver that is associated with said particular user index, wherein said information bits are identified to said at least one particular user without any need to transmit additional user identification information.