MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541123871 A) filed by Malla Reddy (MR) Deemed to be University; Malla Reddy University; Malla Reddy Engineering College For Women; Malla Reddy College Of Engineering And Technology; and Malla Reddy Vishwavidyapeeth, Medchal-Malkajgiri, Telangana, on Dec. 9, 2025, for 'adaptive modulation control for cognitive radio systems.'
Inventor(s) include Dr G Prasanna Kumar; Dr Nenavath Chander; Dr. Sunkari Pradeep; Dr Madduri Samba Sivudu; and B Swapna.
The application for the patent was published on Jan. 2, under issue no. 01/2026.
According to the abstract released by the Intellectual Property India: "The current invention reveals the powerful Adaptive Modulation Control (AMC) model that is specific to Cognitive Radio (CR) networks. Within the context of contemporary wireless telecommunications, the fixed-set of frequency spectrum can be very inefficient, with large blocks of spectrum unused whilst some are immensely congested. Cognitive radio technology tries to solve this by enabling unlicensed secondary users to use the licensed bands on-demand. But the traditional cognitive radio systems may not always be able to sustain a stable data connection when the environment varies in rapid changes thereby causing a high rate of bit error and may also interfere with the use of the primary users. The invention has been able to eliminate these constraints by incorporating a dynamic decision making engine which constantly checks on channel state information and adapts the modulation scheme on the fly. The system works by using a complex spectrum sensing module which is the sensory organ of the radio that is always surveying the radio frequency environment on the spectral holes and changes in noise. The proposed invention is more active in analyzing signal-to-noise ratios (SNR) and interference temperatures compared to traditional systems that can remain trapped in a certain transmission mode until a connection drop happens. According to this granular analysis, the system switches among different modulation constellations automatically, between robust Binary Phase Shift Keying (BPSK) in poor conditions to high density Quadrature Amplitude Modulation (QAM) in ideal channels. The flexibility is what makes sure that the throughput is maximized without the data stream integrity being impaired. Moreover, this invention is designed to have a feedback loop system that will enable quick communication between the transmitter and the receiver in terms of the quality of the channel. This architectural design is a closed-loop architecture that enables the cognitive engine to anticipate channel fading and switching needs prior to any loss of data. Also, the system is very efficient in spectral efficiency by accurately adjusting the modulation parameters to the current state of the wireless channel. It enables a user who is a secondary to be able to send data as fast as possible that the current channel conditions can handle hence making good use of the already limited radio resources. Lastly, the adaptive control mechanism has a safety measure that is set to secure primary users. When the controller notices the re-appearance of a licensed user in common band, the controller does not simply stop the transmission but instead cleverly truncates the modulation complexity and transmission power to be able to reduce interference instantly whilst seeking an alternate spectral band. This functionality would allow it to comply with regulations and allow licensed and unlicensed devices to co-exist in the same frequency environment, and makes the technology attractive to next-generation networks like 5G and more."
Disclaimer: Curated by HT Syndication.
