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Cellular 4G/LTE Channel

Cellular and mobile communications related topics


Qorvo receives first production orders for multiplexer solutions

Qorvo®, a leading provider of core technologies and RF solutions for mobile, infrastructure and aerospace/defense applications, announced Qorvo has received its first production orders for the Company's recently launched multiplexer solutions. Qorvo's high-performance, highly integrated multiplexer solutions are designed to simplify and accelerate the adoption of carrier aggregation (CA) in 4G LTE-Advanced devices.

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Keysight adds Bluetooth audio measurement capabilities to performance audio analyzer

Keysight Technologies Inc. introduced the enhanced U8903B audio analyzer with new Bluetooth® audio measurement capabilities. The Bluetooth option enables the U8903B to make high-performance Bluetooth audio testing for R&D, quality assurance and production tests in the consumer and professional audio and wireless communication industries.

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Ericsson Mobility Report: 5G mobile subscriptions to hit 150 million by 2021

Ericsson Mobility Report provides insight into the future of 5G networks, including a forecast of 150 million 5G mobile subscriptions by 2021. South Korea, Japan, China and the U.S. are predicted to lead with the first, and fastest, 5G subscription uptake. 5G will connect new types of devices, enabling new use cases related to the Internet of Things (IoT); the transition will open up new industries and verticals to ICT transformation.

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Bird Technologies introduces digital signal booster

Bird Technologies, a leading provider of RF components, subsystems, test equipment, and services, today introduced the 614 Series digital signal boosters that are designed to increase the signal strength of land-mobile/public safety communications systems operating at either 450 to 470 MHz or 470 to 488 MHz. The highly configurable system combines the benefits of programmable digital RF filters, the ability to view changes to filter characteristics while viewing their effects in real-time, browser-based configuration and management, and many other features.

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Anatech Electronics cavity bandpass filter serves indoor and outdoor Wi-Fi hotspots

Anatech Electronics introduced the WIFI2437-6 cavity bandpass filter designed for use in either indoor or outdoor Wi-Fi hotspots that combines low insertion loss with high rejection and RF power handling capability. It can be supplied in either standard or weatherized configurations and is available directly from the Anatech Electronics website.

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Brooklyn 5G Summit 2014

NYU Wireless - Brooklyn, NY


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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