Summary of the technology
New method aimed to enhance the overall throughput of communication systems by utilizing outdated channel gain information for distributed interference compression and removal. The technology targets a dynamic environment with several distributed transmitters and receivers sharing a common medium.
Description of the technology
Interference is the main limitation faced by today wireless technologies, mainly due to the network densification, user density and the exponential increase in wireless data traffic verified in the last years. The dynamic nature of wireless communications further exacerbates the interference problem as the transmission and reception entities are unable to adapt as fast as the radio environment dynamics; namely, when they adapt the channel/network state may be already different and then the adaptation is detrimental, instead of beneficial.
This technology proposes a method to efficiently compress and remove the interference generated by multiple receivers using only outdated channel information. Using this technology, the system throughput scales with the square root of the number of terminals (e.g., 500% throughput improvement in a scenario with 100 terminals).
The technology is applicable inscenarios with several pairs of transmitters and receivers communicating simultaneously and using the same resources:
Vehicular and machine-to-machine communications
Scenarios with high density of users
Distributed data storage
Physical layer security for wireless communications
Enhanced throughputand proportional to the square root of the number of transmitter/receiver pairs.
Distributed interference cancelationusing only outdated channel gain information.
Multiple transmitter/receiver pairscommunicating using the same time and frequency resources.
Laboratorialtests have been performed,with very promising numerical results.
•Testing new applications
•Joint further developments
ITseeks partners within information and communication technologies area (ICTs) tofurther develop or license the technology, aswell aspossible end-users fortesting new applications.
Delayed channel information
Transmission over a shared medium
Multi transmitter/receiver pairs
-Instituto deTelecomunicações (IT)
-USApatent granted (US10476620)
-European patent granted (EP17751468)
Intellectual property status
Instituto de Telecomunicações
Additional information (attached documents)