Cellular 4G/LTE Channel

Cellular and mobile communications related topics

ARTICLES

Apple Captures Q4 Smartphone Market

Apple generated 3x more revenue than Samsung, 7x more than Huawei

Market research firm Strategy Analytics estimates that Apple captured 51 percent of the smartphone market in the fourth quarter of 2017 — more than the rest of the industry combined.


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Aviat Networks Selects MaxLinear Transceiver for New Microwave Radio

MaxLinear's MxL11xx CMOS transceiver has been designed in Aviat Networks' new line of WTM 4000 microwave radios. The MxL11xx incorporates full receive, transmit, feedback path and all synthesizer components on a single chip and supports all licensed and unlicensed bands from 5 to 45 GHz, all ETSI channel spacings from 5 to 224 MHz and code rates to 4096-QAM.


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MACOM Faces Second Quarter of Chinese Headwinds

For the first quarter of fiscal 2018, MACOM reported revenue of $130.9 million, which was down 21 percent sequentially and down 14 percent from the prior year’s quarter. MACOM’s CEO John Croteau attributed the decline in revenue to “the geopolitical downturn in China,” the second quarter softness in China has dampened revenue.


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MACOM Announces STMicroelectronics as GaN on Si Manufacturing Partner

MACOM and STMicroelectronics (ST) are teamed to commercialize MACOM’s RF GaN on Si technology, with ST becoming a second source and adding capacity to MACOM’s GaN fab in Lowell, Massachusetts. A formal agreement between the two companies gives MACOM exclusive rights to use its technology for mobile phone, wireless base station and commercial telecommunications infrastructure applications and ST a license to use the technology for RF power applications, such as solid-state cooking, automotive spark plugs and industrial lighting.


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Skyworks Tops $1B in Quarterly Revenue

Reflecting strong demand from cellular phone, Wi-Fi and IoT applications, Skyworks exceeded $1 billion in quarterly revenue for the first time, generating $361 million in cash from operations to end the quarter with $1.7 billion in cash and no debt.


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iPhone, IoT and GaN Lift Qorvo

Buoyed by Apple's iPhone launch and demand for IoT and GaN components, Qorvo's revenue grew modestly in the third quarter of fiscal 2018 to $846 million, up 3 percent sequentially and 2 percent year-over-year. The infrastructure and defense business achieved record revenue of $203 million. While the mobile products unit benefitted from the latest iPhone models, revenue was down 2 percent year-over-year.


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IMAGE GALLERIES

MWC 2017

Barcelona, Spain

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.