The Global Positioning System (GPS), is a constellation of 24 satellites - three of which are backup satellites - which orbit the Earth twice a day at an altitude of about 12,000 miles. Twenty-four hours a day, these satellites continuously broadcast … [Continue reading]
HiperLAN2
HiperLAN2 is one of a number of new generation standards supporting both asynchronous data and time critical services (e.g. packetised voice and video) that are bounded by specific time delays to … [Continue reading]
IEEE 802.11a
While 802.11a operates in the 2.4GHz ISM (Industrial, Scientific and Medical) band, the 802.11a standard was designed to operate in the more recently allocated 5GHz UNII (Unlicensed National Information … [Continue reading]
Bluetooth technology
Named after a tenth-century Danish king, Bluetooth is a specification for a small form-factor, low-cost radio solution providing links between mobile computers, mobile phones and other portable handheld … [Continue reading]
WAP Technology
Also crucial to making net access viable from mobile wireless devices is WAP, the Wireless Application Protocol. WAP is a global standard and is not controlled by any single company. Ericsson, … [Continue reading]
3G Technology
Finally, there's the ultimate goal of third generation (3G) services, whose principal objectives are the provision of greater user capacity, higher data rates and - hopefully - worldwide … [Continue reading]
GPRS Technology
The difficulties the international industry standard bodies have had in approving all of the necessary standards has led to a delay in the deployment of 3G wireless systems. To lessen the impact … [Continue reading]
IEEE 802.11n
Demand for wireless LAN hardware experienced phenomenal growth in the years following the ratification of the IEEE 802.11a standard in the summer of 1999, evolving quickly from novelty into necessity. The initial expansion was … [Continue reading]
GSM Technology
The GSM network can be divided into four main parts: The Mobile Station, which is carried by the subscriber The Base Station Subsystem, which controls the radio link with the Mobile Station The Network and Switching … [Continue reading]
Merom – Intel’s mobile Core 2 Duo CPU technology guide
The announcement of the successor to the Intel Core Duo processor in the summer of 2006 also marked the reunification of Intel's desktop and mobile product lines. Low power consumption was a principal goal of the Intel Core … [Continue reading]