Method and communication quality approximation formula generation device, the communication quality and calculating device, computer program

摘要

PPROBLEM TO BE SOLVED: To reduce a time for obtaining an optimum rotation angle in a multicarrier transmission method diffusing a signal by using a rotation orthogonal code. PSOLUTION: A rotation orthogonal code having a ration angle as a parameter is generated based on a diffusion rate, an encoding calculation expression encoding a signal vector expressed by mapping information by the rotation orthogonal code is generated, a parameter expressing amplitude parameter information corresponding to the diffusion rate is used, a phasing addition calculation expression obtained by adding a phasing influence to the encoding calculation expression is generated, a distance calculation expression between signal points is generated by using the phasing addition calculation expression, a probability calculation expression with conditions including a parameter expressing reception quality information is generated by using the distance calculation expression between signal points, and a communication quality approximate expression is generated by using a signal point occurrence probability and the probability calculation expression with conditions. PCOPYRIGHT: (C)2008,JPO&INPIT