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HARDWARE VIRTUALIZATION FOR MEAN AND VARIANCE ESTIMATIONS OF QAM SYMBOLS
HARDWARE VIRTUALIZATION FOR MEAN AND VARIANCE ESTIMATIONS OF QAM SYMBOLS
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机译:硬件虚拟化,用于QAM符号的均值和方差估计
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摘要
Receivers including estimation unit (EU) circuits and related processing techniques for wireless systems are provided. Efficient expressions for quadrature amplitude modulation (QAM) symbol mean and variance calculations are utilized with efficient expressions and implementations that are adaptive to different orders of QAM formats. An EU circuit includes a mean estimation unit (MEU) circuit and/or second moment estimation unit (SEU) circuit. Each estimation unit circuit is configured to receive a variable QAM normalization factor so that the circuit can be adapted to different QAM orders. Each MEU or SEU circuit can be configured for sequential and/or parallel processing. A pool including multiple MEU circuits and/or a pool including multiple SEU circuits is provided in one embodiment, with a control unit for configuring and reconfiguring the pools of circuits for mean and variance estimation for data streams of QAM symbols.
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