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In this work, we propose a rotation-based transformation method and apply it to the QRD-M detector for MIMO systems with the commonly used square quadrature amplitude modulation (S-QAM) or amplitude and phase-shift keying (APSK). The QRD-M detector based on proposed rotation transformation principle method achieves 50% computation reduction for MIMO systems with 4-QAM compared with the original QRDM...
Energy-efficient realization of soft-output signal detection is of great importance in emerging high-speed multiple-input multiple-output (MIMO) wireless communication systems. This paper presents three algorithm-level complexity-reduction techniques for soft-output detector design to achieve significant energy savings. To demonstrate their effectiveness, we designed a soft-output detector for 4-4...
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