Code division multiple access unit and code division multiple access method
作者： Kenji Ishida
DOI:
关键词: Chip 、 Terminal (electronics) 、 Transmission (telecommunications) 、 Signal 、 Mathematics 、 Arithmetic 、 Exclusive or 、 Code division multiple access 、 Subtraction 、 Code (cryptography)
摘要: The present invention comprises addition/subtraction means 101 to 107 and exclusive OR circuits 111 125. performs addition (A+B: sub/add=0) or subtraction (A-B: sub/add=1) according a logic value of the control terminal sub/add. transmission amplitude signals amp0 amp7 with plural bits width are input 104 at each two channels. 10 118 calculates an data d0 d7 spread code sequence c0 c7. resultant s0 s7 terminals sub/add's means. 108 last step inverts outputs synthesis signal sum
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