Tíquete #24387

LQI値とはどんな機能の値なのか?

: 2011-02-12 18:21 Última Atualização: 2011-02-12 18:45

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LQI値とはどんな機能の値なのかという疑問があるので、投稿します。

Ticket History (3/3 Histories)

2011-02-12 18:21 Updated by: blackzoro
  • New Ticket "LQI値とはどんな機能の値なのか?" created
2011-02-12 18:22 Updated by: blackzoro
  • Dono Update from (Nenhum) to blackzoro
2011-02-12 18:45 Updated by: blackzoro
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17.6 Link Quality Indicator (LQI) cc1101.pdf page 46

The Link Quality Indicator is a metric of the current quality of the received signal.

Link Quality Indicatorは、受信信号の現在の品質の測定基準です。

If PKTCTRL1.APPEND_STATUS is enabled, the value is automatically added to the last byte appended after the payload.

PKTCTRL1.APPEND_STATUSが可能にされるならば、価値はペイロードの後で追加される最後のバイトに自動的に加えられます。

The value can also be read from the LQI status register.

価値は、LQIステータスレジスタから読まれることもできます。

The LQI gives an estimate of how easily a received signal can be demodulated by accumulating the magnitude of the error between ideal constellations and the received signal over the 64 symbols immediately following the sync word.

LQIは、受信信号が同期語の後で64のシンボルの上に理想的な星座と受信信号の間でエラーの大きさをすぐ累積することによってどれくらい簡単に復調されることができるかという推定をします。

LQI is best used as a relative measurement of the link quality (a low value indicates a better link than what a high value does), since the value is dependent on the modulation format.

価値が変調フォーマットに依存している時から、LQIが関連品質(低い価値は、高い価値がそうするものより良い関連を示します)の相対的な測定値として最も使われます。

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