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

Shusuke Kawai, Hiromitsu Aoyama, Rui Ito, Yutaka Shimizu, Mitsuyuki Ashida, Asuka Maki, Tomohiko Takeuchi, Hiroyuki Kobayashi, Go Urakawa, Hiroaki Hoshino, Shigehito Saigusa, Kazushi Koyama, Makoto Morita, Ryuichi Nihei, Daisuke Goto, Motoki Nagata, Kengo Nakata, Katsuyuki Ikeuchi, Kentaro Yoshioka, Ryoichi TachibanaMakoto Arai, Chen Kong Teh, Atsushi Suzuki, Hiroshi Yoshida, Yosuke Hagiwara, Takayuki Kato, Ichiro Seto, Tomoya Horiguchi, Koichiro Ban, Kyosuke Takahashi, Hirotsugu Kajihara, Toshiyuki Yamagishi, Yuki Fujimura, Kazuhisa Horiuchi, Katsuya Nonin, Kengo Kurose, Hideki Yamada, Kentaro Taniguchi, Masahiro Sekiya, Takeshi Tomizawa, Daisuke Taki, Masaaki Ikuta, Tomoya Suzuki, Yuki Ando, Daisuke Yashima, Takahisa Kaihotsu, Hiroki Mori, Kensuke Nakanishi, Takeshi Kumagaya, Yasuo Unekawa, Tsuguhide Aoki, Kohei Onizuka, Toshiya Mitomo

研究成果: Conference contribution

9 被引用数 (Scopus)

抄録

An exponentially Increasing number of wireless-LAN (WLAN) devices In a dense environment causes a decrease in throughput owing to collisions among the devices and the lack of contiguous bandwidth. The next-generation standard of 802.11ax improves spectrum efficiency by additionally supporting 1024 (1K) QAM, OFDMA with 80+80MHz; these impose several challenges to silicon design. 1K-QAM demands extreme IQ balance with an IRR better than -50dB over a wide frequency range up to 80MHz to achieve at least -35dB RX EVM or less. Noise characteristics better than -44dBc LO integrated phase noise as well as 50dB isolation between each TRX chain are mandatory. To best make use of the essential features defined in the 11ax standard, a real-time and arbitrary spectrum-resource control capability at each access point (AP) is beneficial both in terms of further improvement in spectrum efficiency as well as communication reliability in ISM coexisting bands and legacy WLAN. Interference identification of the order of 10μϵ while incorporating everything into a strictly limited silicon area is key to launching the advanced unique functionality. This paper presents a fully integrated 4×4 802.11abgn/ac/ax-compliant AP transceiver SoC. The chip offers frequency-dependent IQ (FD-IQ) mismatch calibration for both amplitude and phase, low-noise TX BB and multimode LO distribution techniques, and real-time interference detection including 2.4GHz inverter-type microwave (MW) ovens.

本文言語English
ホスト出版物のタイトル2018 IEEE International Solid-State Circuits Conference, ISSCC 2018
出版社Institute of Electrical and Electronics Engineers Inc.
ページ442-444
ページ数3
ISBN(電子版)9781509049394
DOI
出版ステータスPublished - 2018 3月 8
外部発表はい
イベント65th IEEE International Solid-State Circuits Conference, ISSCC 2018 - San Francisco, United States
継続期間: 2018 2月 112018 2月 15

出版物シリーズ

名前Digest of Technical Papers - IEEE International Solid-State Circuits Conference
61
ISSN(印刷版)0193-6530

Other

Other65th IEEE International Solid-State Circuits Conference, ISSCC 2018
国/地域United States
CitySan Francisco
Period18/2/1118/2/15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 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 spectrum-efficient WLAN AP transceiver SoC supporting 1024QAM 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