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Dive into the research topics where Al Petrick is active.

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Featured researches published by Al Petrick.


Archive | 2005

IEEE 802.11h dynamic frequency selection (DFS) and transmit power control (TPC)

Bob O'Hara; Al Petrick

This chapter contains sections titled: Users of the 5 GHz frequency New parts to the IEEE 802.11 protocol Transmit power control (TPC) Spectrum management Detection of radar operation


Archive | 2005

Similarities and differences between wireless and wired local area networks (LANs)

Bob O'Hara; Al Petrick

This chapter contains sections titled: Similarities between WLANs and wired LANs Differences between WLANs and wired LANs


Archive | 2005

The physicallayer (PHY)

Bob O'Hara; Al Petrick

This chapter contains sections titled: PHY functionality Direct sequence spread spectrum (DSSS) PHY Frequency hopping spread spectrum (FHSS) PHY Infrared (IR) PHY Geographic regulatory bodies


Archive | 2005

PHY extensions to IEEE 802.11

Bob O'Hara; Al Petrick

This chapter contains sections titled: IEEE 802.11a: Orthogonal frequency division multiplexing (OFDM) PHY IEEE 802.11b: 2.4 high-rate direct sequence spread spectrum (HR/DSSS) PHY IEEE 802.11 DSSS high-rate modulation and data rates


Archive | 2005

2 IEEE 802.11: First international standard for WLANs

Bob O'Hara; Al Petrick

This chapter contains sections titled: IEEE 802.11 architecture Services Summary


Archive | 2005

IEEE 802.11j operation in Japan at 4.9 GHz and 5 GHz

Bob O'Hara; Al Petrick

This chapter contains sections titled: Expanded Country information element Mandatory and optional modes of operation PLCP header, Signal field, and Rate subfield Extended frequency bands and transmit RF power levels Transmit mask and adjacent channel interference Spurious emissions Regulatory domain references Number of frequency channels and data rates Receiver sensitivity, CCA, and slot time Transmitter error vector magnitude (EVM)


Archive | 2005

IEEE 802.11n higher data rates beyond 54 Mbit/s

Bob O'Hara; Al Petrick

This chapter contains sections titled: Channel bonding Higher order modulation Multiple input multiple output (MIMO)


Archive | 1999

The IEEE 802.11 Handbook: A Designer's Companion

Bob O'Hara; Al Petrick


Archive | 2005

Medium access control (MAC)

Bob O'Hara; Al Petrick


Archive | 2005

MAC management information base (MIB)

Bob O'Hara; Al Petrick

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