Questions & Answers on Technologies

What is Orthogonal Time Frequency and Space (OTFS) Modulation?

Oct 5, 2017

Orthogonal Time Frequency and Space (OTFS) modulation is a newly developed wireless modulation technique that provides greater coverage, higher capacity, and cost savings by simultaneously extracting time, frequency & spatial channel behavior.This patented technique provides 100 percent coverage, 10 times more spectral efficiency and a 50 percent cost savings in comparison to other modulation ...read more

What is eCall?

Technologies

Editorial Team

Aug 13, 2018

eCall is an in-vehicle system that automatically alerts emergency services in case of a road accident and will also inform the rescue workers about the crash site's exact location. This 112 emergency call can be either generated by the vehicle occupant manually or by in-vehicle sensors automatically, which get activated at the time of the crash. The eCall device can transmit voice and data directl...read more

What is Integrated Access Backhaul (IAB) technology?

Technologies

Answer

What is Carrier Aggregation?

LTE RF Basics Technologies

Editorial Team

Dec 11, 2018

Carrier Aggregation (CA) is a feature of LTE-Advanced that allows mobile operators to combine two or more LTE carriers into single data channel to increase the capacity of the network and the data rates by exploiting fragmented spectrum allocations.This technology can be applied to either the FDD or TDD variants of LTE with a maximum of five component carriers, each with a bandwidth of up to 20 MH...read more

What is Citizens Broadband Radio System (CBRS)?

Technologies

Editorial Team

Jan 31, 2018

CBRS is know as the Citizens Broadband Radio Service. In 2015, the FCC authorized the use of the 3.5 GHz band i.e 3550 MHz to 3700 MHz for shared wireless access. This band was previously used by the US Navy and other DoD members and was not open for commercial use. The radio interface for CBRS used in this band will be the same as LTE, however the difference will be that this spectrum will be sha...read more

What is MiFi?

RF Basics Technologies Wi-Fi

Editorial Team

Nov 7, 2017

MiFi is a portable cellular device that works as a mobile Wi-Fi hotspot. It has an integrated Wi-Fi router and a cellular modem. Laptops and other devices that do not have a cellular modem can connect to a MiFi device using WiFi. The MiFi device connects to the cellular network and enables other devices to access the network by connecting to the MiFi device. It is like the tethering feature on mob...read more

What is Wi-Fi 6 or 802.11ax?

Technologies Wi-Fi

Editorial Team

Oct 6, 2018

Wi-Fi 6 or Max Wi-Fi or 802.11axis designed to operate in the existing 2.4 GHz and 5 GHz Wi-Fi spectrum. The 802.11ax standard is engineered to increase capacity by up to 4x, along with improving efficiency and coverage, to benefit both 2.4 GHz and 5 GHz bands in a variety of environments including homes, schools, businesses, hotspots, airports, and more. It addition to using MIMO and MU-MIMO, thi...read more

What is WiGig?

Technologies

Editorial Team

Sep 22, 2018

WiGig® (802.11ad) is a wireless standard that allows Wi-Fi devices to use the uncongested 60 GHz frequency band to provide multi-gigabit per second speeds. This standard provides extremely fast, low-latency wireless internet connectivity by using beamforming technology for sending a signal up to 10 meters. The focused transmission reduces interference even in the crowded places. The low power tech...read more

What is BF-OFDM?

Technologies

Answer

Bluetooth vs ANT Technology

Bluetooth Technologies

Editorial Team

Oct 6, 2018

ANT™ is a 2.4-GHz wireless networking protocol developed by Canadian company Dynastream Innovations, a subsidiary of GPS technology provider Garmin. It ultra-low-power, short-range wireless technology can enable devices to run on a coin cell battery for years. This is a competitive technology to Bluetooth, however could not get the mass adoption required to make this a more mainstream technology.A...read more

What is Ultra-Wide Band (UWB) Technology?

Technologies

Editorial Team

Sep 19, 2018

Ultra-Wide Band (UWB) Technology is an ultra-low power wireless technology that transmits a high amount of data over short distances. It can provide a data rate of up to 1Gbit/s within a 10-meter radius for wireless personal area communications. The UWB data rate is significantly higher than the Bluetooth and Wi-Fi technologies.UBW operates over a wide frequency spectrum from 3.1 to 10.6 GHz. To e...read more

2.4 GHz Wi-Fi (802.11b/g/n) Channels and Frequency Band

Technologies Wi-Fi

Editorial Team

Oct 6, 2018

2.4 GHz WLAN/Wi-Fi Technology (802.11 b/g/n) uses the frequency band from 2401 to 2484 MHz. This bandwidth is divided among 14 channels. Each of the WLAN / Wi-Fi Channels are spaced 5 MHz apart, except the last two channels which are spaced 12 MHz apart. Most of these channels (Channel 1 to Channel 11) can be used across the globe, except channels 12, 13 and 14. Channel 12 (2456 - 2478 MHz) and Ch...read more

What is Multi-User Interference Cancellation?

Technologies

Editorial Team

Nov 7, 2017

Multi-User Interference Cancellation (MUIC) is a technology to remove unwanted signals at the device side when a base station simultaneously transmits multiple signals to a number of devices in an area.

What is LoRaWAN?

IoT Technologies

Editorial Team

Jan 3, 2019

LoRaWAN is a Low Power, Wide Area (LPWA) networking protocol developed by the LoRa Alliance, that wirelessly connects battery operated ‘things’ to the internet in regional, national or global networks, targeting key Internet of Things (IoT) requirements such as bi-directional communication, end-to-end security, mobility and localization services.LoRaWAN uses unlicensed spectrum in the ...read more

What is NOMA - Non-Orthogonal Multiple Access?

Technologies

Editorial Team

Nov 7, 2017

Non-Orthogonal Multiple Access (NOMA) is a technology that enables the base station to simultaneously transmit signals to multiple devices in an area at the same time, using the same frequency by controlling the transmission power to each device.

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