Date: Fri, 24 Apr 2009 19:40:04 -0400 From: Sam Leffler <sam@freebsd.org> To: Jin YunYe <yunyejin@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Is Channel Estimation or Channel Impulse Response information accessible from Atheros HAL Message-ID: <49F24DD4.3080404@freebsd.org> In-Reply-To: <e61273a20904241036s70538f7eqc1cd39e3b7ff6fe8@mail.gmail.com> References: <e61273a20904241036s70538f7eqc1cd39e3b7ff6fe8@mail.gmail.com>
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Jin YunYe wrote: > Dear all > > I am doing a research project in which I need to retrieve some > physical layer signal parameters from the wireless adapter/wireless > router. > > Specifically, I want to get the receiver Channel Estimation > information or Channel Impulse Response from the receiver hardware. > Therefore, I would like to ask whether there are any API functions or > system calls in the HAL that I can use to get these information? > > Thanks a lot! Nope. madwifi has some stuff for doing radar detection that might be useful; feel free to port and submit. Otherwise the latest chips have some very useful h/w features that Atheros won't publicly disclose and which I am no longer permitted to see. Sam
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