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- W4308617503 abstract "Signal processing in wireless communications, such as precoding, detection, and channel estimation, are basically about solving inverse matrix problems, which, however, are slow and inefficient in conventional digital computers, thus requiring a radical paradigm shift to achieve fast, real-time solutions. Here, for the first time, we apply the emerging analog matrix computing (AMC) to the linear precoding of massive MIMO. The real-valued AMC concept is extended to process complex-valued signals. In order to adapt the MIMO channel models to RRAM conductance mapping, a new matrix inversion circuit is developed. In addition, fully analog dataflow and optimized operational amplifiers are designed to support AMC precoding implementation. Simulation results show that the zero-forcing precoding is solved within 20 ns for a 16x128 MIMO system, which is two orders of magnitude faster than the conventional digital approach. Meanwhile, the energy efficiency is improved by 50x." @default.
- W4308617503 created "2022-11-13" @default.
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- W4308617503 date "2022-11-07" @default.
- W4308617503 modified "2023-09-28" @default.
- W4308617503 title "Extremely-Fast, Energy-Efficient Massive MIMO Precoding with Analog RRAM Matrix Computing" @default.
- W4308617503 doi "https://doi.org/10.48550/arxiv.2211.03624" @default.
- W4308617503 hasPublicationYear "2022" @default.
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