An 802.11ax 4 × 4 high-efficiency WLAN AP transceiver SoC supporting 1024-QAM with frequency-dependent IQ calibration and integrated interference analyzer

Shusuke Kawai, Rui Ito, Kengo Nakata, Yutaka Shimizu, Motoki Nagata, Tomohiko Takeuchi, Hiroyuki Kobayashi, Katsuyuki Ikeuchi, Takayuki Kato, Yosuke Hagiwara, Yuki Fujimura, Kentaro Yoshioka, Shigehito Saigusa, Hiroshi Yoshida, Makoto Arai, Toshiyuki Yamagishi, Hirotsugu Kajihara, Kazuhisa Horiuchi, Hideki Yamada, Tomoya SuzukiYuki Ando, Kensuke Nakanishi, Koichiro Ban, Masahiro Sekiya, Yoshimasa Egashira, Tsuguhide Aoki, Kohei Onizuka, Toshiya Mitomo

研究成果: Article査読

10 被引用数 (Scopus)

抄録

A fully integrated 4 × 4 802.11abgn/ac/ax transceiver system-on-chip (SoC) with integrated interference analyzer and frequency-dependent in-phase and quadrature (IQ) (FD-IQ) calibration is presented. The FD-IQ technique helps meeting the extremely strict IQ imbalance requirement for 1-K quadratic-amplitude modulation (QAM). The pure current-mode TX baseband (BB) improves SNR to better than 50 dB, and a multi-mode local oscillator (LO) distribution circuit provides non-contiguous operation with the error vector magnitude (EVM) of less than -37 dB. The integrated interference analyzer achieves the highly reliable connection in the presence of the undesired signal and hence improves the frequency usage efficiency by identifying the wireless LAN (WLAN) and other signals in the 2G/5G band.

本文言語English
論文番号8528383
ページ(範囲)3688-3699
ページ数12
ジャーナルIEEE Journal of Solid-State Circuits
53
12
DOI
出版ステータスPublished - 2018 12月
外部発表はい

ASJC Scopus subject areas

  • 電子工学および電気工学

フィンガープリント

「An 802.11ax 4 × 4 high-efficiency WLAN AP transceiver SoC supporting 1024-QAM with frequency-dependent IQ calibration and integrated interference analyzer」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル