Author

Sanjeev Sharma

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Open access Sep 2026

MIMO-SCMA Codebook Design: Joint Optimization of Sum-Rate and Error Performance

Codebook design for overloaded multiple-input multiple-output (MIMO) sparse code multiple access (SCMA) systems is critical, as reliability and spectral efficiency are inherently coupled. Existing approaches often optimize either error performance or spectral efficiency in isolation. In this paper, we propose a joint f...

Minerva Priyadarsini, Kuntal Deka, Zi-Long Liu et al. · IEEE International Symposium... · 0 citations

Sep 2026

Impact of Hardware Impairments on IRS-Assisted MISO-SCMA Communication Systems

This work investigates an intelligent reflecting surfaces (IRS)-assisted multiple inputs and single output (MISO)sparse code multiple access (SCMA) system under the influence of hardware impairments (HIs) and nonlinear power amplifiers (NPAs) by considering phase-shift design. To address the IRS phase-shift design, we...

Sanjeev Sharma, Minerva Priyadarsini, Kuntal Deka et al. · IEEE International Symposium... · 0 citations

Preprint Sep 2026

Error Performance Analysis of CFO-Impaired OFDM-Based Rate-Splitting SCMA

Rate-splitting sparse code multiple access (RS-SCMA) superimposes QAM-modulated common messages and SCMA-encoded private messages over the same resource elements. This paper analyzes the bit error rate (BER) performance of orthogonal frequency division multiplexing (OFDM)-based RS-SCMA in the presence of carrier freque...

Minerva Priyadarsini, Kuntal Deka, Zi-Long Liu et al. · 0 citations