Agora: Real-time massive MIMO baseband processing in software
Agora: Real-time massive MIMO baseband processing in software
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Agora:软件中的实时大规模 MIMO 基带处理
DOI:
10.1145/3386367.3431296
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Zhong, Lin
中科院分区:
文献类型:
--
作者:
Ding, Jian;Doost-Mohammady, Rahman;Kalia, Anuj;Zhong, Lin
Massive multiple-input multiple-output (MIMO) is a key technology in 5G New Radio (NR) to improve spectral efficiency. A major challenge in its realization is the huge amount of real-time computation required. All existing massive MIMO baseband processing solutions use dedicated and specialized hardware like FPGAs, which can efficiently process baseband data but are expensive, inflexible and difficult to program. In this paper, we show that a software-only system called Agora can handle the high computational demand of real-time massive MIMO baseband processing on a single many-core server. To achieve this goal, we identify the rich dimensions of parallelism in massive MIMO baseband processing, and exploit them across multiple CPU cores. We optimize Agora to best use CPU hardware and software features, including SIMD extensions to accelerate computation, cache optimizations to accelerate data movement, and kernel-bypass packet I/O. We evaluate Agora with up to 64 antennas and show that it meets the data rate and latency requirements of 5G NR.
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DOI:
10.1145/3341302.3342072
发表时间:
2019
期刊:
The 31st ACM Special Interest Group on Data Communication (SIGCOMM
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2017
期刊:
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影响因子:
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DOI:
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2019
期刊:
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作者:
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通讯作者:
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DOI:
--
发表时间:
2019
期刊:
影响因子:
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作者:
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通讯作者:
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