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Cellular 4G/LTE Channel

Cellular and mobile communications related topics

ARTICLES

API Technologies launches Distributed Antenna System (DAS) products at IMS

API Technologies Corp., a leading provider of high performance RF, microwave, millimeter wave solutions, announced the launch of Distributed Antenna System (DAS) solutions. API’s DAS interface trays are used to facilitate reliable performance of wireless and broadband devices by boosting coverage and filtering interferences, resulting in improved signal strength and alleviating issues that arise when large numbers of people are trying to send or receive messages, calls and data in a densely populated area.


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Keysight Technologies expands UXM Wireless Test Set LTE-A capabilities

Keysight Technologies Inc. announced new enhancements to the E7515A UXM wireless test set to address leading-edgeLTE-A carrier aggregation (CA) test requirements. New capabilities include support for downlink 4CC1, 256 QAM, and LTE-U with up to three unlicensed carriers, as well as FDD-TDD mixed CA and uplink intra- and inter-band CA measurements.

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Freescale introduces first GaN RF power transistor for cellular base stations

Freescale Semiconductor introduced its first gallium nitride (GaN) RF power transistor for cellular base stations. The new A2G22S160-01S delivers exceptional performance in 30 W and 40 W amplifiers for wireless infrastructure applications, and represents the first of what is planned to become a broad portfolio of Airfast family GaN transistors for the cellular market. 


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By the end of 2015, China LTE subscriptions will exceed the U.S., reaching 500 M

 By the end of 2014, China gained almost 100 million LTE subscriptions in the first year of full LTE commercialization, demonstrating an accelerating growth momentum, according to ABI Research. Thanks to the first-mover advantages, China Mobile seized almost 90% share of the total LTE market in China. “Since the other two China mobile operators—China Unicom and China Telecom—were granted preferred FDD-LTE licenses in March 2015, it is expected that China will overtake the United States to become the largest 4G market in the world, accumulating 500 million LTE subscriptions, or 36.5% of the domestic cellular subscriptions in 2015,” comments Marina Lu, Research Analyst at ABI Research


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Anritsu completes testing of GCT Semiconductor's LTE-Advanced single chip

Anritsu Co. announces it successfully completed testing of GCT Semiconductor’s 4G LTE-Advanced chip, GDM7243Q, using Anritsu’s MD8430A signaling tester with Rapid Test Designer (RTD). GCT Semiconductor, a leading designer and supplier of advanced 4G mobile semiconductor solutions, offers an advanced FDD-TDD LTE Category 5/6/7 single chip, with the world’s first 4X4 MIMO carrier aggregation for LTE.


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IMAGE GALLERIES

Brooklyn 5G Summit 2014

NYU Wireless - Brooklyn, NY

DOCUMENTS AND FILES

Addressing the 4G and 5G Backhaul Capacity Challenge with Air Division Duplexing

Achieving sufficient capacity to meet the forecast backhaul needs over the next few years will be a major challenge. This white paper describes the technique of Air Division Duplexing (ADD), which makes use of MIMO and spatial multiplexing techniques to achieve simultaneous transmission and reception of data on each carrier frequency, and has been shown to achieve full duplex data rates1 in excess of 1 Gb/s in a 28 MHz channel allocation2 in the microwave bands.

Addressing Test Challenges for new LTE-Advanced Standard

While LTE-Advanced brings the promise of higher data rates, designing devices for use in LTE-A offer new test challenges. This paper provides an overview of LTE MIMO and carrier aggregation technologies and describes different methodologies for testing these new capabilities including multi-antenna techniques, MIMO spatial multiplexing, beam steering, as well as the different carrier aggregation modes.

Communications Systems Design

This white paper presents an overview of system level design for wireless communications equipment. It will be useful not just to those involved in the development of new communications systems, but also to designers of new products using existing systems, or anybody seeking to develop new architectures and/or components to reduce product cost and/or size. It also describes the benefits and implications of developing highly integrated System on a Chip (SoC) solutions, which dominate in today's high volume communications products.

Evolutionary & Disruptive Visions Towards Ultra High Capacity Networks

With many groups now beginning to consider the drivers for 5th Generation wireless networks, this timely document includes contributions from 20 IWPC member organizations from around the world and aims to advance certain understandings and concepts for adoption in wireless systems to be deployed beyond the year 2020. This 89 page document covers a broad range of 5G topics with emphasis on mm-wave.

Mobile Data Backhaul: The Need For E-Band

Now that the need for ultra high capacity radios has become an unofficial requirement with a potentially large market backing it, the call for more spectrum savvy radios is in order. Traditional wisdom would have us assume that the legacy pure-play millimeterwave equipment vendors have this market clenched; however, every time there is a technology shift, as is occurring with the E-Band market, it opens the field up to new market leaders and a new competitive landscape. Thus, we have seen traditional microwave vendors throw their hats into the millimeterwave ring with various levels of commitment from OEMing/private labeling traditional millimeterwave vendors’ radios to designing their own millimeterwave radios.

TU Dresden uses National Instruments Platform for 5G Research

Wireless consumer's insatiable demand for bandwidth has spurred unprecedented levels of investment from public and private sectors to explore new ways to increase network capacity. Service providers, now deploying fourth generation networks, are already beginning to look toward and plan for fifth generation networks (5G) to meet the escalating demand. Researchers at TU Dresden (TUD) have begun investigations into 5G technologies using a graphical system design approach and National Instruments' software defined radio platforms. Using the NI platform, TUD researchers significantly compressed the time to transition from concept to prototype.

Solutions for Enabling Fast, Accurate and Efficient Testing of Voice Quality in LTE User Equipment

This application note is designed to provide you with the latest insights on how to best address the long list of test requirements when testing the voice quality of LTE UE, with the right VoIP test building blocks. Successfully providing voice support on LTE will require UE developers to bring together a host of new features and capabilities. Many of these items have been around for a while but have not yet been applied to mobile networking. Others are completely new. Regardless, bringing them together will likely cause significant test pain, as they will need to be tested in conjunction with LTE and/or IMS to be fully exercised.

Small-Signal Intermodulation Distortion in OFDM Transmission Systems

A system that utilizes OFDM/OFDMA, such as the E-UTRA (LTE) downlink or the IEEE 802.11a/g and the IEEE 802.16 physical layers, transmits OFDM symbols, each comprising a number of modulated sub-carriers carrying data or pilot symbols, with inter-subcarrier spacing being equal to or an integer multiple of a fixed frequency. The channel bandwidth (B) is determined by the number of 'occupied' (modulated) subcarriers and the subcarrier spacing.

IMS Architecture: The LTE User Equipment Perspective

The IP Multimedia Subsystem (IMS) dates from 3GPP release 5 almost a decade ago, but is now becoming a reality with the rollout of IMS-based LTE networks. IMS enables convergence on multiple fronts, including access types (fixed, mobile), service types, application control functions and convergence between telephony and traditional data delivery. This paper presents a high-level technical view of the IMS architecture as seen by LTEcapable User Equipment (UE).

Voice and SMS in LTE

This white paper summarizes the technology options for supporting voice and short message service (SMS) in LTE, including circuit switched fallback (CSFB), SMS over SGs, and voice over LTE (VoLTE). It includes background information on the standardization process, and the commercial implications for the different options. The white paper also addresses test and measurement requirements resulting from the support of voice and SMS in LTE.

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