| 摘要 |
FIELD: radio engineering and communications.SUBSTANCE: method involves stage S1, on which master device generates code sequence by specific coder and sends code sequence to each slave device continuously during given period of time according to request of communication, wherein specific encoder is shift register with feedback, made at specific polynome, order and coefficients which are associated with request of communication, while all coefficients and initial values are not equal to 0 in one and same time; specified period of time greater than sum of sleep period and period of detecting slave device or equal thereto that makes sleep cycle and bringing in working position; stage S2, on which slave device receives continuous part of code sequence during detection, decodes code sequence by means of decoder, corresponding to encoder, and performs corresponding operation according to decoding.EFFECT: high noise-immunity, reliability and efficiency of communication, while power consumption can be reduced.12 cl, 5 dwg |
