{"id":656,"date":"2026-06-11T13:43:13","date_gmt":"2026-06-11T05:43:13","guid":{"rendered":"https:\/\/projectleon.net\/make\/blog\/sdr-mesh-radio-gnu-radio-usrp-b200-digital-network-farsi\/"},"modified":"2026-06-11T13:43:14","modified_gmt":"2026-06-11T05:43:14","slug":"sdr-mesh-radio-gnu-radio-usrp-b200-digital-network-farsi","status":"publish","type":"post","link":"https:\/\/projectleon.net\/make\/blog\/sdr-mesh-radio-gnu-radio-usrp-b200-digital-network-farsi\/","title":{"rendered":"\u0633\u0627\u062e\u062a \u0631\u0627\u062f\u06cc\u0648 \u0645\u0634 SDR \u0628\u0627 GNU Radio \u0648 USRP B200: \u0634\u0628\u06a9\u0647 \u0631\u0627\u062f\u06cc\u0648 \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644 (\u0641\u0627\u0631\u0633\u06cc)"},"content":{"rendered":"
\nGNU Radio USRP B200 SDR Mesh \u0634\u0628\u06a9\u0647 \u0631\u0627\u062f\u06cc\u0648 \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644\n<\/div>\n
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\u0634\u0628\u06a9\u0647 \u0645\u0634 \u0631\u0627\u062f\u06cc\u0648 SDR \u0686\u06cc\u0633\u062a\u061f (\u0645\u0628\u062a\u062f\u06cc)<\/h2>\n

\u062f\u0631 \u06cc\u06a9 \u0634\u0628\u06a9\u0647 \u0645\u0634 \u0631\u0627\u062f\u06cc\u0648 \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644\u060c \u0647\u0631 \u0646\u0648\u062f \u06cc\u06a9 SDR (USRP B200<\/strong> \u06cc\u0627 RTL-SDR \u0628\u0627 TX \u0645\u062b\u0644 HackRF) \u062f\u0627\u0631\u062f \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0647\u0645 \u0627\u0631\u0633\u0627\u0644 \u0648 \u0647\u0645 \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0646\u062f. GNU Radio<\/strong> \u0644\u0627\u06cc\u0647 \u0641\u06cc\u0632\u06cc\u06a9\u06cc (\u0645\u062f\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 OFDM \u06cc\u0627 GMSK) \u0631\u0627 \u067e\u06cc\u0627\u062f\u0647\u200c\u0633\u0627\u0632\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u06cc\u06a9 MAC Layer \u0633\u0627\u062f\u0647 \u0631\u0648\u06cc Python \u067e\u06cc\u0627\u0645\u200c\u0647\u0627 \u0631\u0627 \u0628\u0633\u062a\u0647\u200c\u0628\u0646\u062f\u06cc \u06a9\u0631\u062f\u0647 \u0648 \u0645\u0633\u06cc\u0631\u06cc\u0627\u0628\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n

\u0627\u06cc\u0646 \u0631\u0648\u06cc\u06a9\u0631\u062f \u0628\u0631\u0627\u06cc \u062a\u062d\u0642\u06cc\u0642\u0627\u062a \u0634\u0628\u06a9\u0647\u200c\u0647\u0627\u06cc \u0631\u0627\u062f\u06cc\u0648\u06cc\u06cc \u0627\u0631\u062a\u0634\u060c \u0647\u0648\u0627\u067e\u06cc\u0645\u0627\u0647\u0627\u06cc \u0628\u062f\u0648\u0646 \u0633\u0631\u0646\u0634\u06cc\u0646 \u0645\u062f\u0646\u06cc\u060c \u0648 \u0634\u0628\u06a9\u0647\u200c\u0647\u0627\u06cc \u0627\u0636\u0637\u0631\u0627\u0631\u06cc \u062c\u0627\u0644\u0628 \u0627\u0633\u062a. USRP B200 \u062d\u062f\u0648\u062f \u06f6\u06f0\u06f0 \u062f\u0644\u0627\u0631 \u0627\u0633\u062a \u0627\u0645\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0627 HackRF (\u06f2\u06f0\u06f0 \u062f\u0644\u0627\u0631) \u0647\u0645 \u0634\u0631\u0648\u0639 \u06a9\u0631\u062f.<\/p>\n<\/div>\n

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\u0645\u062d\u0635\u0648\u0644\u06cc \u06a9\u0647 \u0645\u06cc\u200c\u0633\u0627\u0632\u06cc\u062f<\/h2>\n

\u06cc\u06a9 \u0634\u0628\u06a9\u0647 \u0631\u0627\u062f\u06cc\u0648 \u062f\u06cc\u062c\u06cc\u062a\u0627\u0644 \u06f2 \u0646\u0648\u062f\u06cc \u0628\u0627 GNU Radio \u0648 USRP\/HackRF.<\/p>\n

    \n
  • \u0647\u0632\u06cc\u0646\u0647:<\/strong> HackRF One \u2248 \u06f2\u06f5\u06f0 \u062f\u0644\u0627\u0631 (\u062c\u0627\u06cc\u06af\u0632\u06cc\u0646 \u0627\u0631\u0632\u0627\u0646\u200c\u062a\u0631)<\/li>\n
  • \u0645\u062f\u0648\u0644\u0627\u0633\u06cc\u0648\u0646:<\/strong> GMSK \u06cc\u0627 BPSK<\/li>\n
  • \u0646\u0631\u062e \u062f\u0627\u062f\u0647:<\/strong> \u06f1\u06f0-\u06f1\u06f0\u06f0kbps<\/li>\n<\/ul>\n<\/div>\n

    \n\nGNU Radio Flowgraph \u2014 SDR Mesh Node<\/text>\n\n\nMessage Source<\/text>\n\n\nGMSK Modulator<\/text>\nBT=0.3 1200bps<\/text>\n\n\nUSRP\/HackRF TX<\/text>\n\n\u2248<\/text>\n\n\nUSRP\/HackRF RX<\/text>\n\n\nGMSK Demodulator<\/text>\nClock Recovery<\/text>\n\n\nMAC Layer (Python) \u2014 Framing, ARQ, Addressing<\/text>\n| Preamble | Sync | DST | SRC | LEN | Payload | CRC |<\/text>\nGNU Radio Mesh \u2014 \u0644\u0627\u06cc\u0647 \u0641\u06cc\u0632\u06cc\u06a9\u06cc GMSK + MAC \u0633\u0627\u062f\u0647<\/text>\n<\/svg><\/p>\n

    MAC Layer \u0633\u0627\u062f\u0647 \u0628\u0627 Python<\/h2>\n
    \nimport struct, time\nfrom gnuradio import gr, blocks, digital\n\nclass SimpleMACLayer:\n    \"\"\"MAC Layer \u0633\u0627\u062f\u0647 \u0628\u0631\u0627\u06cc \u0634\u0628\u06a9\u0647 \u0631\u0627\u062f\u06cc\u0648 SDR\"\"\"\n    PREAMBLE = bytes([0xAA]*4)\n    SYNC = bytes([0x2D,0xD4])\n\n    def __init__(self, my_addr):\n        self.addr = my_addr\n\n    def frame(self, dst, payload: bytes) -> bytes:\n        \"\"\"\u0633\u0627\u062e\u062a \u0641\u0631\u06cc\u0645 MAC\"\"\"\n        header = struct.pack(\"BBB\", dst, self.addr, len(payload))\n        data = self.PREAMBLE + self.SYNC + header + payload\n        crc = sum(data) & 0xFF\n        return data + bytes([crc])\n\n    def deframe(self, raw: bytes):\n        \"\"\"\u0628\u0627\u0632 \u06a9\u0631\u062f\u0646 \u0641\u0631\u06cc\u0645\"\"\"\n        idx = raw.find(self.SYNC)\n        if idx < 0: return None\n        body = raw[idx+2:]\n        dst, src, ln = struct.unpack(\"BBB\", body[:3])\n        if len(body) < 3+ln+1: return None\n        payload = body[3:3+ln]\n        crc_calc = sum(body[:-1]) & 0xFF\n        crc_recv = body[-1]\n        if crc_calc != crc_recv: return None\n        return {\"dst\":dst, \"src\":src, \"payload\":payload}\n\n# \u0627\u0633\u062a\u0641\u0627\u062f\u0647:\nmac = SimpleMACLayer(my_addr=1)\nframe = mac.frame(dst=2, payload=b\"Hello Node 2!\")\nprint(f\"Frame: {frame.hex()}\")\ndecoded = mac.deframe(frame)\nprint(f\"Decoded: {decoded}\")\n<\/code><\/pre>\n
    \u0686\u06a9\u200c\u0644\u06cc\u0633\u062a \u0631\u0627\u0647\u200c\u0627\u0646\u062f\u0627\u0632\u06cc<\/h2>\n\n\n\n\n\n\n\n\n
    \u0628\u0631\u0631\u0633\u06cc<\/th>\n\u062a\u0648\u0636\u06cc\u062d<\/th>\n<\/tr>\n<\/thead>\n
    GNU Radio \u0646\u0635\u0628 \u0627\u0633\u062a\u061f<\/td>\nsudo apt install gnuradio<\/td>\n<\/tr>\n
    HackRF\/USRP \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f\u061f<\/td>\nhackrf_info \u06cc\u0627 uhd_find_devices<\/td>\n<\/tr>\n
    GMSK TX\/RX Loop-back \u06a9\u0627\u0631 \u0645\u06cc\u200c\u06a9\u0646\u062f\u061f<\/td>\n\u0622\u0646\u062a\u0646 \u06a9\u0648\u062a\u0627\u0647 loop-back<\/td>\n<\/tr>\n
    \u067e\u06cc\u0627\u0645 \u0628\u06cc\u0646 \u06f2 \u0646\u0648\u062f \u0627\u0631\u0633\u0627\u0644 \u0634\u062f\u061f<\/td>\n\u06f1 \u0645\u062a\u0631 \u0641\u0627\u0635\u0644\u0647 \u0628\u0627 \u0622\u0646\u062a\u0646 \u06a9\u0648\u0686\u06a9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
    \n\n\n\n\n\n\n\nHackRF TX<\/text>\nGMSK<\/text>\nGNU Radio<\/text>\nMAC Layer<\/text>\nGNU Radio<\/text>\nGMSK Demod<\/text>\nHackRF RX<\/text>\n\u0646\u0648\u062f \u06f2<\/text>\nSDR Mesh \u2014 HackRF + GNU Radio GMSK + MAC Python<\/text>\n<\/svg><\/p>\n
    \u0648\u06cc\u062f\u0626\u0648\u0647\u0627\u06cc \u0622\u0645\u0648\u0632\u0634\u06cc<\/h2>\n
    \n