?? ieee80211a_nosf.mdl
字號(hào):
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document_text01 "IEEE 802.11a WLAN PHY model
\n
\nSUMMARY OF M"
"ODEL
\n* End-to-end 802.11a physical layer
\n* All mandatory and optional da"
"ta rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s
\n* BPSK, QPSK, 16-QAM, 64-QA"
"M modulations
\n* Forward error correction coding (convolutional; code rates "
"1/2, 2/3, 3/4)
\n* OFDM transmission: 52 subcarriers, 4 pilots, 64-pt FFTs, c"
"ircular prefix
\n* Data interleaving
\n* PLCP preamble (modeled as 2x2 long t"
"raining sequences; see below)
\n* Receiver equalization
\n* Viterbi decoding
"
"\n* Data rates selectable on-the-fly
\n* Adaptive modulation demo over disper"
"sive multipath fading channel
\n
\nMODEL SIMPLIFICATIONS/ASSUMPTIONS
\n* Bas"
"eband-equivalent model (no up/down RF conversion)
\n* Random data transmision"
" (no data scrambling used)
\n* Fixed number of data symbols per packet (no pa"
"d bits used)
\n* Continuous frame-to-frame operation (no coder state resettin"
"g via tail bits)
\n* Fixed transmit power level; link-SNR specified (on-the-f"
"ly)
\n* Idealized timing/frequency acquisition
\n* Not modeled:
\n - MAC/"
"PHY interface and PLCP header (TXVECTOR/RXVECTOR)
\n - Short training sequ"
"ences (for AGC, diversity, timing/frequency acq.)
\n - Time windowing of O"
"FDM symbols
\n
\nCOLOR LEGEND
\nBlue: Communication system blocks
\nOrange: C"
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\nGreen: Signal/performance measurements
\nYellow: Disp"
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\nGray: Settings and documentation
\n
\n"
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