Research at Cisco

Advanced Interference Mitigation Algorithms for Receivers with Limited Spatial Dimensions

Project ID:



Advanced Interference Mitigation Algorithms for Receivers with Limited Spatial Dimensions


Unlicensed frequency bands are usually populated with numerous transmitters, hence each receiver gathers interfere in addition to the desired signal. This RFP calls for interference mitigation and removal techniques that act without a priori knowledge on the type or the characteristics of interference, and would perform reasonably well even with limited spatial dimensions (e.g. one receive antenna).

Full Description:

Decentralized access of wireless medium by numerous applications in unlicensed bands causes interference of one device to another nearby device. Growing usage of the unlicensed spectrum by many more devices will increase the interference problem further. This has already happened for 2.4GHz bands and will be the case in future for 5GHz bands. Moreover, in a truly decentralized network no device or technology has authority to disable known identified interferers. Therefore, the only solution left is that the receiving device performs its best to remove as much of the interference from received signals as possible. While this seems very challenging, the solution might be within the narrow-band nature of most interferers, or large spatial dimension of receiver. Aside from classical interference mitigation solutions that rely on multiple-antenna reception, this RFP seeks signal-processing algorithms that rely on limited spatial dimension, such as single receive antenna, simply to avoid high cost of multiple-antenna systems. The emphasis of this RFP is the application of the newly developed advanced signal processing techniques that possibly rely on the narrow-band properties of interference signals. Furthermore, the variety of the devices accessing the unlicensed band mandates that such algorithms to be agnostic to the type of interference or at least to be adjustable to various classes of radio access technologies that interferers use.

Constraints and other information:

IPR will stay with the University. Cisco expects customary scholarly dissemination of results, and hopes that promising results would be made available to the community without limiting licenses, royalties, or other encumbrances.

Proposal submission:

Please use the link below to submit a proposal for research responding to this RFP. After a preliminary review, we may ask you to revise and resubmit your proposal.

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RFPs may be withdrawn as research proposals are funded, or interest in the specific topic is satisfied. Researchers should plan to submit their proposals as soon as possible. The deadline for Submissions is the Friday of the first week of each calendar quarter (the months of January, April, July, October). Funding decisions and communication will occur within 90 days from the quarterly submission deadline. The usage of funding is expected within 12 months of funding decision. Please plan your requests accordingly.

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