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\u30e2\u30c7\u30eb\u306e\u6982\u8981<\/h3>\n\n\n\n

\u3000\u90fd\u5e02\u5185\u306e\u30bb\u30eb\u30e9\u30fc\u74b0\u5883\u3067\u6e2c\u5b9a\u306b\u57fa\u3065\u3044\u3066\u4f1d\u642c\u640d\u5931\u3068\u4f1d\u642c\u9045\u5ef6\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u7814\u7a76\u3057\u305f\u5831\u544a\u306f\u5e7e\u3064\u304b\u3042\u308b\u304c\u3001\u6587\u732e[1]\u306fUHF\u5e2f\u304b\u308915GHz\u307e\u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u521d\u3081\u3066\u793a\u3057\u305f\u5148\u99c6\u7684\u306a\u7814\u7a76\u7d50\u679c\u3067\u3042\u308b\u3002\u56f31\u306b\u90fd\u5e02\u5185\u306e\u30bb\u30eb\u30e9\u30fc\u74b0\u5883\u306e\u30a4\u30e1\u30fc\u30b8\u3092\u793a\u3059\u3002\u6587\u732e[1]\u3067\u306f\u3001\u4f1d\u642c\u640d\u5931\u306e\u5468\u6ce2\u6570\u7279\u6027\u306f450MHz\uff5e15GHz\u306e\u7bc4\u56f2\u3067\\(20 \\log f\\)\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u307e\u305f\u3001\u96fb\u529b\u9045\u5ef6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3068RMS\u9045\u5ef6\u30b9\u30d7\u30ec\u30c3\u30c9\u306f3\uff5e15GHz\u306e\u7bc4\u56f2\u3067\u307b\u307c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2\u3068\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad8\u3092\u5909\u3048\u305f\u6e2c\u5b9a\u304c\u884c\u308f\u308c\u3066\u3001\u6761\u4ef6\u306e\u7bc4\u56f2\u304c\u793a\u3055\u308c\u3066\u3044\u308b\u3002
\u3000\u30bb\u30eb\u30e9\u30fc\u74b0\u5883\u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u306b\u95a2\u3059\u308b\u521d\u671f\u306e\u5831\u544a\u3092\u6587\u732e[2-9]\u306b\u793a\u3059\u3002\u6587\u732e[2-6]\u304c\u4f1d\u642c\u640d\u5931\u3067\u3001\u6587\u732e[7-9]\u304c\u4f1d\u642c\u9045\u5ef6\u3067\u3042\u308b\u3002\u6e2c\u5b9a\u306b\u57fa\u3065\u3044\u305f15GHz\u307e\u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u306b\u3064\u3044\u3066\u306f\u6587\u732e[1]\u306e\u5831\u544a\u304c\u6700\u521d\u3067\u3042\u3063\u305f\u3002<\/p>\n\n\n

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\u56f31 \u90fd\u5e02\u5185\u306e\u30bb\u30eb\u30e9\u30fc\u74b0\u5883<\/figcaption><\/figure><\/div>\n\n\n

\uff1c\u4f1d\u642c\u640d\u5931\uff1e<\/span><\/strong>
\u3000\u65e5\u672c\u306e\u90fd\u5e02\u74b0\u5883\u3067\u306e\u30de\u30af\u30ed\u30bb\u30eb\u3068\u30de\u30a4\u30af\u30ed\u30bb\u30eb\u3067\u4f1d\u642c\u640d\u5931\u306e\u6e2c\u5b9a\u304c\u884c\u308f\u308c\u305f\u3002\u6e2c\u5b9a\u5468\u6ce2\u6570\u306f\u3001457.2MHz\u3001813MHz\u30012.2GHz\u30014.7GHz\u30018.45GHz\u300115.45GHz\u3067\u3042\u308b\u3002\u6e2c\u5b9a\u306b\u7528\u3044\u305f\u57fa\u5730\u5c40\u306f7\u3064\u3067\u9001\u4fe1\u30a2\u30f3\u30c6\u30ca\u9ad8\u306f\u3001\u9ad8\u5c64\u30d3\u30eb\u8857\u306730m\u300130m\u300140m\u3001100m\u3001\u4f4e\u5c64\u30d3\u30eb\u8857\u306720m\u300125m\u300130m\u3067\u3042\u308b\u3002\u3053\u308c\u3089\u306e\u6e2c\u5b9a\u304b\u3089\u6b21\u306e\u7d50\u679c\u304c\u5f97\u3089\u308c\u305f\u3002
\u30fb\u5404\u5468\u6ce2\u6570\u3054\u3068\u306e10m\u77ed\u533a\u9593\u5909\u52d5\u3092\u6bd4\u3079\u308b\u3068\u5168\u3066\u540c\u3058\u3088\u3046\u306a\u5909\u52d5\u3092\u3057\u3066\u3044\u308b\u3002\u307e\u305f\u3001\u77ed\u533a\u9593\u5909\u52d5\u306e\u6a19\u6e96\u504f\u5dee\u3082\u5468\u6ce2\u6570\u306b\u3088\u3089\u305a\u8fd1\u3044\u5024\u3067\u3042\u308b\u3002
\u30fb\u4f1d\u642c\u640d\u5931\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u307f\u308b\u3068\u3001\\(20 \\log f\\)\u306b\u8fd1\u3044\u7279\u6027\u306b\u306a\u308b\u3002
\u4ee5\u4e0a\u3092\u307e\u3068\u3081\u308b\u3068\u3001\u8868\uff11\u306b\u793a\u3059\u6761\u4ef6\u306e\u7bc4\u56f2\u306b\u304a\u3044\u3066\u4f1d\u642c\u640d\u5931\u3084\u77ed\u533a\u9593\u5909\u52d5\u306e\u5468\u6ce2\u6570\u7279\u6027\u306f\\(20 \\log f\\)\u306b\u8fd1\u3044\u3002\u3053\u308c\u306f\u3001\u81ea\u7531\u7a7a\u9593\u640d\u5931\u306e\u5468\u6ce2\u6570\u7279\u6027\u306f\\(20 \\log f\\)\u3067\u3042\u308b\u305f\u3081\u3001\u5468\u6ce2\u6570\u3054\u3068\u306e\u8d85\u904e\u640d\u5931\u304c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u307e\u305f\u3001\u5468\u6ce2\u6570\u7279\u6027\u3092\u3082\u3064\u56de\u6298\u6ce2\u306f\u652f\u914d\u7684\u3067\u306f\u306a\u3044\u3068\u8003\u3048\u3089\u308c\u308b\u3002<\/p>\n\n\n\n

\u88681  \u4f1d\u642c\u640d\u5931\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u7bc4\u56f2<\/p>\n\n\n\n

\u8a18\u53f7<\/strong> <\/td>\u30d1\u30e9\u30e1\u30fc\u30bf\u8aac\u660e <\/strong>[<\/strong>\u5358\u4f4d<\/strong>]   <\/strong><\/td>\u7bc4\u56f2<\/strong> <\/td><\/tr>
\\(f\\)<\/td>\u5468\u6ce2\u6570 [GHz]\u3000<\/td>0.457\uff5e15.45 GHz<\/td><\/tr>
\\(h_b\\) <\/td>\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad8 [m]<\/td>20\uff5e100 m<\/td><\/tr>
\\(d\\)<\/td>\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2 [km]<\/td>3 km\u4ee5\u5185<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\uff1c\u4f1d\u642c\u9045\u5ef6\uff1e<\/span><\/strong>\u3000
\u3000\u96fb\u529b\u9045\u5ef6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u6e2c\u5b9a\u304c\u9ad8\u5c64\u30d3\u30eb\u8857\u306e3\u3064\u306e\u57fa\u5730\u5c40\u30673GHz\u30018GHz\u300115GHz\u306e\u5468\u6ce2\u6570\u3067\u884c\u308f\u308c\u305f\u3002\u57fa\u5730\u5c40\u9ad8\u306f30m\u300130m\u300140m\u3067\u3042\u308b\u3002\u3053\u308c\u3089\u306e\u6e2c\u5b9a\u304b\u3089\u6b21\u306e\u7d50\u679c\u304c\u5f97\u3089\u308c\u305f\u3002
\u30fb\u5468\u6ce2\u6570\u3054\u3068\u306e\u9045\u5ef6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u5f62\u72b6\u306f\u304a\u4e92\u3044\u306b\u8fd1\u3044\u3002
\u30fb RMS\u9045\u5ef6\u30b9\u30d7\u30ec\u30c3\u30c9\u306e\u7d2f\u7a4d\u5206\u5e03\u3092\u6c42\u3081\u308b\u3068\u3001\u5468\u6ce2\u6570\u306b\u3088\u3089\u305a\u304a\u4e92\u3044\u306b\u8fd1\u3044\u30ab\u30fc\u30d6\u304c\u5f97\u3089\u308c\u308b\u3002\u7d2f\u7a4d50%\u3084\u7d2f\u7a4d95%\u3067\u6bd4\u8f03\u3057\u3066\u3082\u5468\u6ce2\u6570\u306b\u3088\u3089\u305a\u8fd1\u3044\u5024\u306b\u306a\u308b\u3002
\u4ee5\u4e0a\u3092\u307e\u3068\u3081\u308b\u3068\u3001\u88682\u306b\u793a\u3059\u6761\u4ef6\u306e\u7bc4\u56f2\u306b\u304a\u3044\u3066\u9045\u5ef6\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3084\u9045\u5ef6\u30b9\u30d7\u30ec\u30c3\u30c9\u306f\u5468\u6ce2\u6570\u306b\u3088\u3089\u305a\u304a\u4e92\u3044\u306b\u8fd1\u3044\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u3002<\/p>\n\n\n\n

\u88682 \u4f1d\u642c\u9045\u5ef6\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u7bc4\u56f2<\/p>\n\n\n\n

\u8a18\u53f7<\/strong><\/td>\u30d1\u30e9\u30e1\u30fc\u30bf\u8aac\u660e <\/strong>[<\/strong>\u5358\u4f4d<\/strong>]   <\/strong>\u3000\u3000<\/strong><\/td>\u7bc4\u56f2<\/strong> <\/td><\/tr>
\\(f\\)<\/td>\u5468\u6ce2\u6570 [GHz]\u3000\u3000\u3000\u3000\u3000\u3000\u3000<\/td>3\uff5e15 GHz<\/td><\/tr>
\\(h_b\\) <\/td>\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad8 [m]<\/td>30\uff5e40 m<\/td><\/tr>
\\(d\\)<\/td>\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2 [km]<\/td>1 km\u4ee5\u5185<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u6587\u732e[1]\u306b\u306f\u30e2\u30c7\u30eb\u306e\u63a8\u5b9a\u7cbe\u5ea6\u306f\u793a\u3055\u308c\u3066\u3044\u306a\u3044\u3002\u30e2\u30c7\u30eb\u306e\u59a5\u5f53\u6027\u306f\u6e2c\u5b9a\u7d50\u679c\u306e\u30b0\u30e9\u30d5\u3067\u793a\u3055\u308c\u3066\u3044\u308b\u3002\u76f4\u63a5\u3001\u6587\u732e\u3092\u53c2\u7167\u3057\u3066\u9802\u304d\u305f\u3044\u3002<\/p>\n\n\n\n

\u53c2\u7167<\/h2>\n\n\n\n[1] Y. Oda, R. Tsuchihashi, K. Tsunekawa, M. Hata, \u201cMeasured path loss and multipath propagation characteristics in UHF and microwave frequency bands for urban mobile communications,\u2019\u2019 Proc. IEEE VTC 2001 Spring, pp.337-341, Rhodes, Greece, May. 2001.
[2] M. Hata, \u201cEmpirical formula for propagation loss in land mobile radio services, \u201dIEEE Trans. Veh. Technol., vol.VT-29, no.3, pp.317-325, Aug. 1980.
[3] F. Ikegami, S. Yoshida, T. Takeuchi, and M. Umehira, \u201cPropagation factors controlling mean field strength on urban streets, \u201dIEEE Trans. Antennas Propagat., AP-32, no.8, pp.822-829, Aug. 1984.
[4] J. Walfisch and H. L. Bertoni, \u201cA theoretical model of UHF propagation in urban environment, \u201dIEEE Trans. Antennas Propagat., AP-36, no.12, pp.1788-1796, Dec. 1988.
[5] \u85e4\u4e95\u8f1d\u4e5f\uff0c\u201c\u9678\u4e0a\u79fb\u52d5\u901a\u4fe1\u306b\u304a\u3051\u308b\u4f1d\u642c\u640d\u63a8\u5b9a\u5f0f\uff0d\u201d\u5742\u4e0a\u5f0f\u201c \u306e\u62e1\u5f35\uff0d\uff0c\u201d \u4fe1\u5b66\u8ad6\uff08B\uff09\uff0cvol. J86-B\uff0cno.10\uff0cpp.2264-2267\uff0cOct. 2003.
[6] \u592a\u7530\u559c\u5143\uff0c\u8868\u82f1\u6bc5\uff0c\u4e09\u4e0a\u5b66\uff0c\u85e4\u4e95\u8f1d\u4e5f\uff0c \u201c\u30de\u30a4\u30af\u30ed\u6ce2\u5e2f\u306b\u304a\u3051\u308b\u4f1d\u642c\u640d\u5931\u63a8\u5b9a\u5f0f\u306e\u691c\u8a0e\uff0d\u201c\u62e1\u5f35\u5742\u4e0a\u5f0f\u201d\u3068\u306e\u6bd4\u8f03\uff0d\uff0c\u201d\u4fe1\u5b66\u6280\u5831\uff0cAP2003-319\uff0cpp.51-56\uff0c March. 2004.
[7] \u95a2\u6fa4\u4fe1\u4e5f\uff0c\u5b88\u5c71\u6804\u677e\uff0c\u201c\u90fd\u5e02\u5185\u306b\u304a\u3051\u308b1.5GHz\u5e2f\u591a\u91cd\u8def\u4f1d\u642c\u7279\u6027\uff0c\u201d\u4fe1\u5b66\u8ad6\uff08B-\u2161\uff09\uff0cvol.J72-B-\u2161\uff0cno.9, pp.499-501\uff0cSep. 1989.
[8] Y. Ohta and T. Fujii, “Delay profile prediction in microwave-band for wideband radio propagation,” Proc. ISAP2005, vol.3, pp.1105-1108, Seoul, Korea, Aug. 2005.
[9] \u85e4\u4e95\u8f1d\u4e5f\uff0c\u8868\u82f1\u6bc5\uff0c\u592a\u7530\u559c\u5143\uff0c\u201c\u5e83\u5e2f\u57df\u79fb\u52d5\u4f53\u901a\u4fe1\u306b\u304a\u3051\u308b\u6642\u7a7a\u9593\u96fb\u6ce2\u4f1d\u642c\u30e2\u30c7\u30eb\uff0c\u201d\u4fe1\u5b66\u8ad6\uff08B\uff09\uff0cvol.J91-B\uff0cno.9\uff0cpp.901-915\uff0cSep. 2008.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30e2\u30c7\u30eb\u306e\u6982\u8981 \u3000\u90fd\u5e02\u5185\u306e\u30bb\u30eb\u30e9\u30fc\u74b0\u5883\u3067\u6e2c\u5b9a\u306b\u57fa\u3065\u3044\u3066\u4f1d\u642c\u640d\u5931\u3068\u4f1d\u642c\u9045\u5ef6\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u7814\u7a76\u3057\u305f\u5831\u544a\u306f\u5e7e\u3064\u304b\u3042\u308b\u304c\u3001\u6587\u732e[1]\u306fUHF\u5e2f\u304b\u308915GHz\u307e\u3067\u306e\u5468\u6ce2\u6570\u7279\u6027\u3092\u521d\u3081\u3066\u793a\u3057\u305f\u5148\u99c6\u7684\u306a\u7814\u7a76\u7d50\u679c\u3067\u3042\u308b\u3002\u56f31\u306b\u90fd\u5e02\u5185\u306e\u30bb\u30eb\u30e9 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":12073,"menu_order":71,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-10346","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/10346","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/comments?post=10346"}],"version-history":[{"count":19,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/10346\/revisions"}],"predecessor-version":[{"id":14892,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/10346\/revisions\/14892"}],"up":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/12073"}],"wp:attachment":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/media?parent=10346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}