4G wireless technology
4G refers to the fourth generation of cellular wireless standards. It is a successor to 3G and 2G standards, with the aim to provide a wide range of data rates up to ultra-broadband (gigabit-speed) Internet access to mobile as well as stationary users. Although 4G is a broad term that has had several different and more vague definitions, this article uses 4G to refer to IMT Advanced (International Mobile Telecommunications Advanced), as defined by ITU-R.
A 4G cellular system must have target peak data rates of up to approximately 100 Mbit/s for high mobility such as mobile access and up to approximately 1 Gbit/s for low mobility such as nomadic/local wireless access, according to the ITU requirements. Scalable bandwidths up to at least 40 MHz should be provided. A 4G system is expected to provide a comprehensive and secure all-IP based solution where facilities such as IP telephony, ultra-broadband Internet access, gaming services and HDTV streamed multimedia may be provided to users
4G Mobile Broadband
4G wireless technologies usher in the era of truly mobile broadband access to the internet. But 4G networks also faces many new design challenges as they need to deliver high spectral efficiency, adequate cell coverage and good QoS for a variety of services over a packet switched pipe. High data rates also necessitate the use of 10 or 20 MHz wideband radio channels which exacerbates the problem of fading across created by multi-path propagation and user mobility.
While 4G standards such as research-WiMAX and 3GPP-LTE have incorporated many features to address these challenges, there are still a number of innovations that can greatly enhance 4G performance yet are completely standards transparent. Beceem as the leading 4G semiconductor company has pioneered and incorporated many innovative technologies to deliver the highest industry performance across all the key metrics such as throughput, hand-off, low power, link reliability and QoS.
Powerwave Technologies announced a number of new wireless antenna and base station subsystem solutions to address the needs of European operations deploying 4G 3GPP Long Term Evolution (LTE) service at the 2600 MHz spectrum.
The products introduced include new single- and multi-port antennas optimized for 2.6 GHz LTE deployments, a new 2.6 GHz LTE, DCS and UMTS Triplexer Cross-band Combiner, and a new Twin 2.6 GHz LTE Tower Mounted Amplifier. “Powerwave has been recognized in the industry for its vision in advancing the future of mobile broadband through the development of innovative LTE solutions,” said Khurram P. Sheikh, chief product and development officer, Powerwave Technologies, Inc.
“Our new products for 2.6 GHz LTE deployments are designed to address several challenges faced by operators. By providing integrated components that support multiple frequency bands and multiple wireless protocols, Powerwave’s offerings reduce the overall tower real estate requirements and network costs and reduce power consumption by eliminating extraneous components and cabling. This also results in a smaller, more compact footprint for improved aesthetics. Additionally, Powerwave’s new 2.6 GHz LTE offerings help ensure interworking with legacy 2G and 3G networks, which is essential in dense metropolitan areas. “Our portfolio of 4G LTE infrastructure products – including antennas, TMAs, MCPAs and radio heads, along with our service and software solutions – are designed to reduce deployment costs and complexity, and provide network operators with a distinct time-to-market advantage.”