DPSK\uff08\u5dee\u5206\u76f8\u79fb\u952e\u63a7\uff09<\/strong> \uff1a\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u4e5f\u9002\u7528\u4e8eZigBee\u6280\u672f\u4e2d\u7684\u67d0\u4e9b\u5e94\u7528\u573a\u666f\u3002<\/li>\n<\/ul>\n\n\n\n\u3000\u3000ZigBee\u6280\u672f\u7684\u8c03\u5236\u65b9\u5f0f\u591a\u6837\uff0c\u5305\u62ecBPSK\u3001QPSK\u3001OQPSK\u3001FSK\u548cDPSK\u7b49\uff0c\u5177\u4f53\u4f7f\u7528\u54ea\u79cd\u8c03\u5236\u65b9\u5f0f\u53d6\u51b3\u4e8e\u5de5\u4f5c\u9891\u6bb5\u548c\u5e94\u7528\u9700\u6c42\u3002<\/strong><\/p>\n\n\n\n\u3000\u3000\u4e00\u3001 ZigBee\u6280\u672f\u4e2dBPSK\u8c03\u5236\u65b9\u5f0f\u7684\u5177\u4f53\u5e94\u7528\u573a\u666f\u548c\u6027\u80fd\u8868\u73b0<\/h2>\n\n\n\n
\u3000\u3000\u5728ZigBee\u6280\u672f\u4e2d\uff0cBPSK(\u4e8c\u8fdb\u5236\u76f8\u79fb\u952e\u63a7)\u8c03\u5236\u65b9\u5f0f\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6570\u5b57\u8c03\u5236\u89e3\u8c03\u6280\u672f\uff0c\u901a\u8fc7\u6539\u53d8\u8f7d\u6ce2\u4fe1\u53f7\u7684\u76f8\u4f4d\u6765\u8868\u793a\u6570\u5b57\u4fe1\u53f7\u76840\u548c1.\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u5177\u6709\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u3001\u8bef\u7801\u7387\u4f4e\u7b49\u4f18\u70b9\uff0c\u4f46\u5e26\u5bbd\u5229\u7528\u7387\u76f8\u5bf9\u8f83\u4f4e\u3002<\/p>\n\n\n\n
\u3000\u3000\u5177\u4f53\u5e94\u7528\u573a\u666f\u65b9\u9762\uff0cBPSK\u8c03\u5236\u65b9\u5f0f\u5728\u4f4e\u901f\u6570\u636e\u4f20\u8f93\u548c\u957f\u8ddd\u79bb\u4f20\u8f93\u7684\u5e94\u7528\u573a\u666f\u4e2d\u66f4\u52a0\u5e38\u89c1\u3002\u4f8b\u5982\uff0c\u5728\u667a\u80fd\u5bb6\u5c45\u7cfb\u7edf\u4e2d\uff0c\u7531\u4e8e\u5176\u4f4e\u529f\u8017\u548c\u9ad8\u53ef\u9760\u6027\uff0cBPSK\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4f20\u611f\u5668\u7f51\u7edc\u4e2d\uff0c\u7528\u4e8e\u76d1\u6d4b\u5bb6\u5ead\u73af\u5883\u4e2d\u7684\u5404\u79cd\u53c2\u6570\u3002\u6b64\u5916\uff0cBPSK\u4e5f\u9002\u7528\u4e8e\u9700\u8981\u957f\u65f6\u95f4\u7535\u6c60\u5bff\u547d\u7684\u65e0\u7ebf\u4e2a\u4eba\u533a\u57df\u7f51\u7edc(WPAN)\uff0c\u5982\u4f4e\u529f\u8017\u65e0\u7ebf\u4f20\u611f\u5668\u7f51\u7edc\u3002<\/p>\n\n\n\n
\u3000\u3000\u6027\u80fd\u8868\u73b0\u65b9\u9762\uff0c\u6839\u636e\u4e0d\u540c\u7684\u9891\u7387\u548c\u4fe1\u9053\u6761\u4ef6\uff0cBPSK\u5728ZigBee\u7cfb\u7edf\u4e2d\u7684\u6027\u80fd\u6709\u6240\u4e0d\u540c\u3002\u4f8b\u5982\uff0c\u5728868MHz\u9891\u6bb5\u4e0a\uff0cBPSK\u57fa\u4e8eZigBee\u7684\u8bef\u7801\u7387(BER)\u4e3a10^-4\u65f6\uff0c\u7f16\u7801\u589e\u76ca\u572811.5dB\u523040.5dB\u4e4b\u95f4\u3002\u800c\u5728900MHz\u9891\u6bb5\u4e0a\uff0cBPSK\u540c\u6837\u8868\u73b0\u51fa\u8272\uff0c\u7f16\u7801\u589e\u76ca\u572812dB\u523040dB\u4e4b\u95f4\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u6a21\u62df\u6d4b\u8bd5\u4e2d\uff0cBPSK\u57fa\u4e8eZigBee\u7684\u8868\u73b0\u53ef\u80fd\u4e0d\u5982\u5176\u4ed6\u8c03\u5236\u65b9\u5f0f\uff0c\u5982O-QPSK\uff0c\u5728\u6240\u6709\u6a21\u62df\u6027\u80fd\u6d4b\u8bd5\u4e2d\u8868\u73b0\u6700\u5dee\u3002<\/p>\n\n\n\n
\u3000\u3000\u4e8c\u3001 QPSK\u8c03\u5236\u65b9\u5f0f\u5728ZigBee\u6280\u672f\u4e2d\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u6297\u5e72\u6270\u80fd\u529b\u7684\u8be6\u7ec6\u6bd4\u8f83\u3002<\/h2>\n\n\n\n
\u3000\u3000\u5728ZigBee\u6280\u672f\u4e2d\uff0cQPSK\u8c03\u5236\u65b9\u5f0f\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u6297\u5e72\u6270\u80fd\u529b\u6709\u4ee5\u4e0b\u8be6\u7ec6\u6bd4\u8f83\uff1a<\/p>\n\n\n\n
\u3000\u30001. \u6570\u636e\u4f20\u8f93\u901f\u7387<\/h3>\n\n\n\n
\u3000\u3000ZigBee\u6280\u672f\u7684\u6700\u5927\u7406\u8bba\u6570\u636e\u4f20\u8f93\u901f\u7387\u4e3a250Kbps\u3002\u7136\u800c\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u7531\u4e8e\u73af\u5883\u548c\u5176\u4ed6\u6280\u672f\u9650\u5236\uff0c\u901a\u5e38\u65e0\u6cd5\u8fbe\u5230\u8fd9\u4e00\u6700\u5927\u503c\u3002\u8fd9\u79cd\u4f4e\u901f\u7387\u7279\u6027\u4f7f\u5f97ZigBee\u975e\u5e38\u9002\u5408\u4e8e\u9700\u8981\u957f\u7535\u6c60\u5bff\u547d\u548c\u4f4e\u80fd\u8017\u7684\u5e94\u7528\u573a\u666f\u3002<\/p>\n\n\n\n
\u3000\u30002. \u6297\u5e72\u6270\u80fd\u529b<\/h3>\n\n\n\n
\u3000\u3000QPSK\u8c03\u5236\u901a\u8fc7\u5c06\u4fe1\u606f\u5206\u6563\u5728\u4e0d\u540c\u7684\u76f8\u4f4d\u4e0a\u8fdb\u884c\u4f20\u8f93\uff0c\u53ef\u4ee5\u964d\u4f4e\u4fe1\u53f7\u53d7\u5230\u5e72\u6270\u7684\u53ef\u80fd\u6027\u3002\u5177\u4f53\u6765\u8bf4\uff0cQPSK\u8c03\u5236\u5c06\u6bcf\u4e2a\u7801\u5143\u6620\u5c04\u5230\u56db\u4e2a\u4e0d\u540c\u7684\u76f8\u4f4d\u4e0a\uff0c\u8fd9\u589e\u52a0\u4e86\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002\u5c3d\u7ba1\u5982\u6b64\uff0c\u7531\u4e8e\u76f8\u90bb\u76f8\u4f4d\u4e4b\u95f4\u7684\u8ddd\u79bb\u8f83\u5c0f\uff0cQPSK\u5728\u9ad8\u9891\u573a\u666f\u4e0b\u7684\u6297\u5e72\u6270\u80fd\u529b\u53ef\u80fd\u4e0d\u5982\u4e00\u4e9b\u5176\u4ed6\u8c03\u5236\u65b9\u5f0f\u3002<\/p>\n\n\n\n
\u3000\u30003. \u7efc\u5408\u5206\u6790<\/h3>\n\n\n\n
\u3000\u3000QPSK\u8c03\u5236\u65b9\u5f0f\u5728ZigBee\u6280\u672f\u4e2d\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u4e3a250Kbps\u5de6\u53f3\uff0c\u800c\u5176\u6297\u5e72\u6270\u80fd\u529b\u8f83\u5f3a\uff0c\u4f46\u5e76\u975e\u6700\u4f18\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0c\u5176\u4ed6\u8c03\u5236\u65b9\u5f0f\u5982QDPSK\u53ef\u80fd\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u63d0\u4f9b\u66f4\u597d\u7684\u6297\u5e72\u6270\u6027\u80fd\u3002<\/p>\n\n\n\n
\u3000\u3000\u4e09\u3001 OQPSK\u8c03\u5236\u65b9\u5f0f\u5728ZigBee\u6280\u672f\u4e2d\u7684\u6bd4\u7279\u6269\u5c55\u6280\u672f\u662f\u5982\u4f55\u5b9e\u73b0\u7684?<\/h2>\n\n\n\n
\u3000\u3000\u5728ZigBee\u6280\u672f\u4e2d\uff0cOQPSK(\u504f\u79fb\u56db\u76f8\u76f8\u79fb\u952e\u63a7)\u8c03\u5236\u65b9\u5f0f\u7684\u6bd4\u7279\u6269\u5c55\u6280\u672f\u4e3b\u8981\u901a\u8fc7\u5c06\u8f93\u5165\u7801\u6d41\u5206\u6210\u4e24\u8def\u5e76\u8fdb\u884c\u6b63\u4ea4\u8c03\u5236\u6765\u5b9e\u73b0\u3002\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u4e0e\u4f20\u7edf\u7684QPSK(\u56db\u76f8\u76f8\u79fb\u952e\u63a7)\u6709\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f46\u5176\u5173\u952e\u533a\u522b\u5728\u4e8e\u4e24\u4e2a\u6b63\u4ea4\u5206\u91cf\u7684\u6bd4\u7279\u5728\u65f6\u95f4\u4e0a\u9519\u5f00\u4e86\u534a\u4e2a\u7801\u5143\u5468\u671f\u3002<\/p>\n\n\n\n
\u3000\u3000\u5177\u4f53\u6765\u8bf4\uff0cOQPSK\u8c03\u5236\u65b9\u5f0f\u5229\u7528\u4e86\u6052\u5305\u7edc\u6280\u672f\uff0c\u5373\u5df2\u8c03\u6ce2\u7684\u5305\u7edc\u4fdd\u6301\u4e3a\u6052\u5b9a\u3002\u8fd9\u4f7f\u5f97\u5728\u53d1\u9001\u5e26\u9650\u540e\uff0c\u5373\u4f7f\u7ecf\u8fc7\u975e\u7ebf\u6027\u90e8\u4ef6\u65f6\uff0c\u4e5f\u80fd\u53ea\u4ea7\u751f\u5f88\u5c0f\u7684\u9891\u8c31\u6269\u5c55\u3002\u8fd9\u79cd\u7279\u6027\u5bf9\u4e8e\u79fb\u52a8\u901a\u4fe1\u7cfb\u7edf\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u4eec\u901a\u5e38\u9700\u8981\u4f4e\u529f\u7387\u5e94\u7528\u548c\u9ad8\u6548\u7684\u975e\u7ebf\u6027\u653e\u5927\u5668\u3002<\/p>\n\n\n\n
\u3000\u3000\u5728ZigBee\u6280\u672f\u4e2d\uff0cOQPSK\u8c03\u5236\u65b9\u5f0f\u88ab\u7528\u4e8e\u7269\u7406\u5c42(PHY layer)\uff0c\u4ee5\u6ee1\u8db3\u4f4e\u6570\u636e\u7387\u3001\u4f4e\u529f\u8017\u548c\u4f4e\u6210\u672c\u4f20\u611f\u5668\u7f51\u7edc\u7684\u9700\u6c42\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0cOQPSK\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4fe1\u53f7\u7684\u53ef\u9760\u6027\u548c\u4f20\u8f93\u6548\u7387\uff0c\u8fd8\u51cf\u5c11\u4e86\u76f8\u4f4d\u8df3\u53d8\uff0c\u4ece\u800c\u964d\u4f4e\u4e86\u4fe1\u53f7\u5305\u7edc\u7684\u8d77\u4f0f\u3002<\/p>\n\n\n\n
\u3000\u3000\u56db\u3001 FSK\u8c03\u5236\u65b9\u5f0f\u5728\u4f4e\u901f\u7387\u5e94\u7528\u4e2d\u7684\u4f18\u52bf\u548c\u5c40\u9650\u6027<\/h2>\n\n\n\n
\u3000\u3000FSK(\u9891\u79fb\u952e\u63a7)\u8c03\u5236\u65b9\u5f0f\u5728\u4f4e\u901f\u7387\u5e94\u7528\u4e2d\u7684\u4f18\u52bf\u548c\u5c40\u9650\u6027\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\u3000\u30001. \u4f18\u52bf\uff1a<\/h3>\n\n\n\n\n- \u3000\u3000\u6297\u5e72\u6270\u80fd\u529b\u5f3a<\/strong>\uff1aFSK\u8c03\u5236\u65b9\u5f0f\u5177\u6709\u8f83\u597d\u7684\u6297\u566a\u58f0\u6027\u80fd\uff0c\u80fd\u591f\u6709\u6548\u62b5\u6297\u4fe1\u9053\u4e2d\u7684\u5e72\u6270\u3002<\/li>\n\n\n\n
- \u3000\u3000\u5b9e\u73b0\u7b80\u5355<\/strong>\uff1aFSK\u8c03\u5236\u6280\u672f\u76f8\u5bf9\u5bb9\u6613\u5b9e\u73b0\uff0c\u4e0d\u9700\u8981\u590d\u6742\u7684\u786c\u4ef6\u8bbe\u5907\uff0c\u8fd9\u4f7f\u5f97\u5b83\u5728\u4e2d\u4f4e\u901f\u6570\u636e\u4f20\u8f93\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u5e94\u7528\u3002<\/li>\n\n\n\n
- \u3000\u3000\u4fe1\u53f7\u4f20\u8f93\u7a33\u5b9a<\/strong>\uff1a\u7531\u4e8e\u5176\u9891\u7387\u53d8\u5316\u7684\u7279\u6027\uff0cFSK\u8c03\u5236\u65b9\u5f0f\u5728\u8fdc\u7a0b\u6570\u636e\u4f20\u8f93\u4e2d\u8868\u73b0\u51fa\u8272\uff0c\u9002\u5408\u4e8e\u4fe1\u9053\u6761\u4ef6\u8f83\u5dee\u7684\u73af\u5883\u3002<\/li>\n\n\n\n
- \u3000\u3000\u4f4d\u9519\u8bef\u7387\u4f4e<\/strong>\uff1aFSK\u8c03\u5236\u65b9\u5f0f\u7684\u4f4d\u9519\u8bef\u7387\u8f83\u4f4e\uff0c\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
\u3000\u30002. \u5c40\u9650\u6027\uff1a<\/h3>\n\n\n\n\n- \u3000\u3000\u6570\u636e\u4f20\u8f93\u901f\u7387\u4f4e<\/strong>\uff1aFSK\u8c03\u5236\u65b9\u5f0f\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u901a\u5e38\u9002\u7528\u4e8e1200\u6ce2\u7279\u4ee5\u4e0b\u7684\u8bbe\u5907\u3002\u8fd9\u610f\u5473\u7740\u5b83\u4e0d\u9002\u5408\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u9700\u6c42\u3002<\/li>\n\n\n\n
- \u3000\u3000\u9891\u5e26\u5229\u7528\u7387\u4f4e<\/strong>\uff1aFSK\u8c03\u5236\u65b9\u5f0f\u5360\u7528\u7684\u9891\u5e26\u8f83\u5bbd\uff0c\u9891\u5e26\u5229\u7528\u7387\u8f83\u4f4e\uff0c\u8fd9\u5728\u5e26\u5bbd\u6709\u9650\u7684\u60c5\u51b5\u4e0b\u4f1a\u6210\u4e3a\u74f6\u9888\u3002<\/li>\n\n\n\n
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