Siemens IEEE802.11 - Manual (Page 28)

, © Siemens, 2002
PHY Terminology
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FHSS Frequency Hoping Spread Spectrum
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DSSS Direct Sequence Spread Spectrum
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OFDM Orthogonal Frequency Division Multiplex
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PPM Pulse Position Modulation
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GFSK Gaussian Frequency Shift Keying
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DBPSK Differential Binary Phase Shift Keying
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DQPSK Differential Quadrature Phase Shift Keying
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CCK Complementary Code Keying
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PBCC Packet Binary Convolutional Coding
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QAM Quadrature Amplitude Modulation