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Exciting Projects for PHY and MAC Layers of IEEE 802.11

机译：令人兴奋的IEEE 802.11 PHY和MAC层项目

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摘要

The first few widely accepted amendments to IEEE 802.11 [1] wireless networking specifications, namely IEEE 802.11a, IEEE 802.11b, and IEEE 802.11g, featured relatively low spectral efficiencies and data rates. Driven by technological advances in signal processing and communications theory, sustained improvement in spectral efficiency, coverage, and quality of service has been achieved in IEEE 802.11n and IEEE 802.11ac [2]. Particularly, progressive system improvement is achieved by the successive introduction of novel techniques, including orthogonal frequency division multiplexing (OFDM) and multiple-input, multiple-output (MIMO) antenna techniques. Some advanced transmission techniques, especially multiuser (MU)-MIMO and transmit beamforming, have also helped to boost the performance of Wi-Fi to gigabit-persecond speed, and they have led to the current state of the art, namely IEEE 802.11ac in 2.4- and 5-GHz bands, and IEEE 802.11ad in the 60-GHz frequency band [3].
机译：对IEEE 802.11 [1]无线网络规范的前几项修订，即IEEE 802.11a，IEEE 802.11b和IEEE 802.11g，具有相对较低的频谱效率和数据速率。在信号处理和通信理论的技术进步的推动下，IEEE 802.11n和IEEE 802.11ac [2]实现了频谱效率，覆盖范围和服务质量的持续改进。特别地，通过相继引入包括正交频分复用（OFDM）和多输入多输出（MIMO）天线技术在内的新技术，可以实现系统的逐步改进。一些先进的传输技术，尤其是多用户（MU）-MIMO和传输波束成形，也帮助将Wi-Fi的性能提高到了千兆比特/秒的速度，并催生了当前的最新技术，即IEEE 802.11ac。 2.4 GHz和5 GHz频段，以及60 GHz频段中的IEEE 802.11ad [3]。

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