Full-duplex radio built on CMOS
29 April 2015
Telecoms, Datacoms, Wireless, IoT
News
Electronics Technology
A team of engineering researchers at New York’s Columbia University has figured out a way to carry out full-duplex wireless transmission, over a single frequency band, via a nano-scale CMOS chip.
They presented their work at the International Solid-State Circuits Conference (ISSCC) in San Francisco in February.
CoSMIC (short for Columbia high-Speed and Mm-wave IC), as it has been called by the team led by Electrical Engineering Associate Professor Harish Krishnaswamy, aims to overturn the conventional wisdom that transmitters and receivers either work at different times, or at the same time but at different frequencies.
In the era of Big Data, the current frequency spectrum crisis is one of the biggest challenges researchers are grappling with and it is clear that today’s wireless networks will not be able to support tomorrow’s data deluge. Current standards, such as 4G/LTE, already support 40 different frequency bands, and there is no space left at radio frequencies for future expansion. At the same time, the grand challenge of the next-generation 5G network is to increase data capacity by 1000 times.
In this context, the ability to have a transmitter and receiver re-use the same frequency has the potential to immediately double the data capacity of today’s networks. Krishnaswamy notes that other research groups and startup companies have demonstrated the theoretical feasibility of simultaneous transmission and reception at the same frequency, but no one has yet been able to build tiny nanoscale ICs with this capability.
The biggest challenge the team faced with full duplex was cancelling the transmitter’s echo or self-interference. CoSMIC technology accomplishes this by implementing an echo canceller at the receiver’s input port, allowing it to cancel transmitter self-interference with one part per billion accuracy.
This innovation is “a game-changer,” according to Krishnaswamy: “By leveraging our new technology, networks can effectively double the frequency spectrum resources available for devices like smartphones and tablets,” he enthuses. The next step planned by the research team is to test a number of full-duplex nodes to understand what the gains are at the network level.
Further reading:
Module combines 5G and NTN support
Quectel Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions announced the launch of its BG770A-SN ultra-compact 5G-ready satellite communication module, compliant with 3GPP releases 13, 14 and 17.
Read more...
Scalable and secure IoT device onboarding and management
Telecoms, Datacoms, Wireless, IoT
EasyPass is an enhancement within Cambium’s cnMaestro platform, aimed at providing local businesses with secure, efficient, and scalable device management, making it ideal for high-demand environments such as educational institutions, retail spaces, and corporate campuses.
Read more...
SIMCom’s A7673X series
Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
SIMCom’s A7673X series is a Cat 1 bis module that supports LTE-FDD, with a maximum downlink rate of 10 Mbps and an uplink rate of 5 Mbps.
Read more...
Non-terrestrial network module
Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Fibocom unveiled its MA510-GL (NTN), a non-terrestrial networks module which is compliant with 3GPP Release 17 standard.
Read more...
Cellular IoT connectivity via satellite
Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The Telit Cinterion cellular LPWA module will enable satellite data communication using the NB-IoT protocol, without any special hardware changes required for the integration of the cellular module in the customer application.
Read more...
Wireless module supports up to 600 Mbps
iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Quectel’s FCU865R is a high-performance Wi-Fi 6 and Bluetooth 5.3 LCC package module which can be used for WLAN and Bluetooth connections.
Read more...
Unlocking the future of connectivity
Telecoms, Datacoms, Wireless, IoT
The battle for the 6 GHz spectrum band is heating up in South Africa, mirroring global debates on the allocation of spectrum between Wi-Fi and cellular operators.
Read more...
Quectel wireless module wins accolade
iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
The winners of the 2024 IoT Evolution 5G Leadership Award were recently announced, with Quectel walking away with an award for its modules which make 5G features more easily accessible for IoT applications, notably the company’s RG255C-GL.
Read more...
Innovative upgrade process for 2G/3G
Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
What is likely to happen during the sunset period for 2G and 3G signals, especially on the back of already near-obsolescence of 2G network equipment, is for the availability of the connectivity mediums to begin to reduce between now and the shutdown date.
Read more...
RFID in aviation: the ultimate solution to baggage mishandling
Osiris Technical Systems
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Creating a solution that enables real-time tracking of airline baggage on a global scale seems like an impossible task when considering the number of airlines, airports, and passengers that flow through and between them.
Read more...
printer friendly version