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Wireless Technology Lab - Emerging Unlicensed Technologies

Tropper Technologies' Wireless Workshop is designed to explore various aspects of emerging wireless technologies...

There has recently been an explosion of unlicensed wireless standards in the United States within the ISM (FCC Part 18) and U-NII (which is part of the FCC Primary Fixed Wireless band, along with the MMDS and Fixed Wireless Access (FWA) ) categories.  In Europe, the European Telecommunications Standards Institute (ETSI) has created the Broadband Radio Access Networks (BRAN) category.   Similarly, the Mobile Multimedia Access Communication (MMAC) organization has been created in Japan.  This evolving list will help to keep track of and explain some of the more popular flavors.


Service Technology Standard Freq. Band (MHz.) Multiple Access Scheme Modulation Scheme
Wireless PAN Bluetooth IEEE 802.15 2400-2483

FHSS

Full Duplex

 GFSK
Wireless LAN Wi-Fi IEEE 802.11b 2400

DSSS or FHSS

or IR

BPSK

QPSK

CCK
Wireless LAN Wi-Fi IEEE 802.11a 5725-5825

U-NII

DSSS with

TDM/TDD

 Main = OFDM
Wireless PAN HomeRF SWAP 2400

FHSS with

CSMA/CA -Data

TDMA - Voice

 2FSK / 4FSK
Wireless MAN

(BWA)

Wireless High Speed Unlicensed Man (Human)

 IEEE 802.16.4

(a type of evolved LMDS service)

 5000 Not yet finalized Main = OFDM
Wireless MAN

Hyperlan High Performance Radio Local Area Network

 (ETSI) Broadband Radio Access Networks (BRAN) 5000 Elimination Yield Non-Pre-emptive priority Multiple Access (EY-NPMA) FSK/GMSK
Wireless MAN

Hyperlan2 High Performance Radio Local Area Network Type 2

 (ETSI) Broadband Radio Access Networks (BRAN) 5000 TDMA w/TDD

Main = OFDM

Sub Modulation

= BPSK / QPSK or QAM
 

Wireless MAN

(BWA)

 HiperAccess (BRAN)

(a type of evolved LMDS service)

-European Style

 40.5 - 43.5 GHz Not yet finalized Not yet finalized