16-bit BFSK demodulator with complex or real data samples. Suitable for passband or baseband operation. Ideal for use in low cost / low power RF applications. Small implementation size. Typical symbol ...

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To address this issue, we propose a variable modulation SCMA (VM-SCMA) that allows users to employ codebooks with different modulation orders. To guide the VM-SCMA design, a VM matrix (VMM) that ...

Theoretically the proposed demodulation scheme is not influenced by the zeros of the Bessel functions, and can keep a good performance in a wide range of modulation depth. It is compared with ...