In addition to 3G, Wi-Fi based-systems may be used to provide broadband wireless. Wi-Fi is based on the IEEE 802.11 family of standards and is primarily a local area networking (LAN) technology designed to provide in-building broadband coverage. Wi-Fi is the name of a wireless network technology that uses radio waves to provide high-speed wireless … Read more
In 1998, the Institute of Electrical and Electronics Engineers (IEEE) formed a group called 802.16 to develop a standard for what was called a wireless metropolitan area network, or wireless MAN. Originally, this group focused on developing solutions in the 10GHz to 66GHz band, with the primary application being delivering high-speed connections to businesses that … Read more
Second-generation broadband wireless systems were able to overcome the LOS issue and to provide more capacity. This was done through the use of a cellular architecture and implementation of advanced-signal processing techniques to improve the link and system performance under multipath conditions. Several start-up companies developed advanced proprietary solutions that provided significant performance gains over … Read more
As DSL and cable modems began to be deployed, wireless systems had to evolve to support much higher speeds to be competitive. Systems began to be developed for higher frequencies, such as the 2.5GHz and 3.5GHz bands. Very high speed systems, called local multipoint distribution systems (LMDS), supporting up to several hundreds of megabits per … Read more
The history of broadband wireless as it relates to WiMAX can be traced back to the desire to find a competitive alternative to traditional wireline-access technologies. Spurred by the deregulation of the telecom industry and the rapid growth of the Internet, several competitive carriers were motivated to find a wireless solution to bypass incumbent service … Read more
Sweden’s trade minister, Ewa Bjorling has said that a probe by the European Commission into allegations of illegal state subsidies by the Chinese government for Huawei and ZTE could harm European manufacturers. She said that she is concerned that there could be retaliatory measures taken by the Chinese government if the EU imposes tariffs … Read more
Facebook is again rumoured to be working on its own smartphone following efforts to hire a number of former Apple staff who developed the company’s iPhone. There have been rumours that the website giant wants to boost its mobile offering and admitted in its stock market prospectus that its mobile services are not generating … Read more
Multi-path combination in the BSC during soft handoffMulti-path combination in the BTS during softer handoffs Soft handoff means that during the handoff of a mobile station at the coverage edge areas of two or multiple base stations, the mobile station receives the signals from multiple base stations (two in most cases) at the same … Read more
Message Transmission Mode MS measures the frame quality and informs the base station to the result i.e. whether it is in the threshold or periodical mode. Base station determines whether to change the forward transmitting power or not. In IS-95 system, the forward power control is slow but in CDMA2000 system it is fast. Forward … Read more
Five of the USA’s largest cable TV networks have joined forces to combine their Wi-Fi networks into a single network with over 50,000 hotspots across their markets. The Wi-Fi networks will remain owned by the separate companies, Bright House Networks, Cablevision, Comcast, Cox Communications and Time Warner Cable but will be jointly branded as “CableWiFi”. … Read more