Overview
Incise Tactical QAM waveform is a 100% indigenous software-defined radio (SDR) waveform purpose-built for tactical communication and intelligence applications in the Indian defense sector and other wireless domain applications.
The waveform is implemented on FPGA:
1. The FPGA hosts the QAM transmitter-receiver IP core, responsible for adaptive modulation (16/32/64/128/256-QAM), FEC encoding/decoding, and spectrum analysis via the Wideband FFT engine (64-32K transform).
2. The Transmitter-Receiver Chain is tested on Xilinx Zynq Ultrascale+ MPSoC based ZCU104 Evaluation Board, the decoded data is validated against the golden MATLAB reference model.
Key Features of the System:
• Adaptive 16/32/64/128/256-QAM modulation with Link Adaptation — up to 8 bps/Hz spectral efficiency
• High throughput: up to 200 Mbps raw data rate over 40 MHz channel bandwidth
• Wideband FFT IP Core (64-32K transform length) for real-time spectrum analysis alongside demodulation
• Uses Symbol Modulator/Demodulator (QAM 16-256), Equalizer, Convolutional Encoder, Additive/Multiplicative Scrambler, Interleaver, Viterbi/Reed-Solomon/TCC/LDPC Encoder-Decoder, De-Scrambler, Bit-Deinterleaver.
• Field-upgradeable waveform via FPGA Bit-Stream update — zero hardware change required
• Register MAP control via SPI and PCIe Gen3 x4 for real-time runtime parameter reconfiguration
Applications:
• Combat-Net Radio (CNR) replacement for Network Centric Warfare/ Intelligence, surveillance and reconnaissance
• Wideband SIGINT / COMINT spectrum monitoring
• Airborne LOS data-link for Advanced Light Helicopter-Weapon Systems Integrated/ Light Combat Aircraft Tejas
• DVB-S2 + QAM hybrid satellite ground segment
• High-rate missile telemetry downlink (C-Band)
• EW (Electronic warfare) jamming assessment & ECCM (Electronic Counter-Counter Measures) waveform trials (Future Scope)
