Binary Linear codes generation apparatus and method using orthogonal codes for communication system

摘要

This invention related to an apparatus and method for generating a linear block code by using an orthogonal code set. A transmitter transmits a codeword instead of information bits representing an information. The codeword length is longer than the information bits length. The length of codeword L can be predetermined based on permitted error rate and transmission space of the codeword in a communication frame. That means a coding rate is predetermined in a communication system. An orthogonal code set, the orthogonal code length is 2a, can be defined. The orthogonal code length 2a is a least value larger than the codeword length L. A codeword having length L is generated by deleting "c" predetermined symbols of the orthogonal code. The transmitter transmits one codeword related to the information bits. A receiver receives the codeword transmitted by the transmitter and decodes the received codeword.