| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a highly reliable power line carrier communication equipment even in the case of a power line in an inferior transmission environment in respect to communication data demodulation applying spread spectrum communication technology to a power line carrier communication equipment. SOLUTION: An SS communication type receiving means is constituted of plural BPFs 51 to 53 having respectively different pass frequency bands, amplifying means 61 to 63, inverse diffusion means 71 to 73 and data demodulating means 81 to 83 which correspond to the number of BPFs 51 to 53, and a majority means 9. Since each frequency band is sufficiently amplified in accordance with the levels of a signal and a noise, data corresponding to the SN ratio of the band are demodulated and the majority of the whole frequency bands is found out, accurate data demodulation can be attained even when the SN ratio of a partial frequency band with a high signal level is deteriorated and a signal level is low in other frequency bands having sufficiently high SN ratios, so that the SN ratio of the whole bands can be improved and highly reliable communication can be attained.</p> |
