From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp86.iad3a.emailsrvr.com (smtp86.iad3a.emailsrvr.com [173.203.187.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 3D1223B29E for ; Tue, 28 Nov 2017 15:22:35 -0500 (EST) Received: from smtp35.relay.iad3a.emailsrvr.com (localhost [127.0.0.1]) by smtp35.relay.iad3a.emailsrvr.com (SMTP Server) with ESMTP id 0B8216579; Tue, 28 Nov 2017 15:22:35 -0500 (EST) Received: from app17.wa-webapps.iad3a (relay-webapps.rsapps.net [172.27.255.140]) by smtp35.relay.iad3a.emailsrvr.com (SMTP Server) with ESMTP id E7BA56567; Tue, 28 Nov 2017 15:22:34 -0500 (EST) X-Sender-Id: dpreed@reed.com Received: from app17.wa-webapps.iad3a (relay-webapps.rsapps.net [172.27.255.140]) by 0.0.0.0:25 (trex/5.7.12); Tue, 28 Nov 2017 15:22:35 -0500 Received: from reed.com (localhost.localdomain [127.0.0.1]) by app17.wa-webapps.iad3a (Postfix) with ESMTP id D45AFA00A5; Tue, 28 Nov 2017 15:22:34 -0500 (EST) Received: by apps.rackspace.com (Authenticated sender: dpreed@reed.com, from: dpreed@reed.com) with HTTP; Tue, 28 Nov 2017 15:22:34 -0500 (EST) X-Auth-ID: dpreed@reed.com Date: Tue, 28 Nov 2017 15:22:34 -0500 (EST) From: dpreed@reed.com To: "Bruno Antunes" Cc: "=?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?=" , make-wifi-fast@lists.bufferbloat.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_20171128152234000000_32611" Importance: Normal X-Priority: 3 (Normal) X-Type: html In-Reply-To: References: <0982A196-2DA3-46E6-B18C-DADDAE252F6E@toke.dk> Message-ID: <1511900554.867129578@apps.rackspace.com> X-Mailer: webmail/12.9.9-RC Subject: Re: [Make-wifi-fast] Tinfoil hats for WiFi routers X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Nov 2017 20:22:35 -0000 ------=_20171128152234000000_32611 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =0AThanks. Reviewing the paper, all it claims is that "signal strength" is = increased in desired areas. The impact on MIMO and DSSS decoding of the pha= se mixing is unclear, but the reflector appears to be small - about the sam= e size as the AP..=0A =0AThere is some assertion at the beginning of the pa= per that it is more fine grained than MIMO in its control. But they don't d= emonstrate that in the paper, and don't provide any theoretical justificati= on.=0A =0ASo it's kind of cute, but I'm skeptical of its actual utility rel= ative to other "dynamic" approaches that can optimize for situations like d= oor positions, furniture movement, etc.=0A =0AA hybrid approach including a= reflector and 4x4 MIMO might be good, but getting that optimized is more c= omplex than just optimizing RSSI.=0A =0A=0A=0AOn Tuesday, November 28, 2017= 1:29pm, "Bruno Antunes" said:=0A=0A=0A=0A> The links= for the papers are on the youtube video description:=0A> =0A> https://www.= youtube.com/watch?v=3D1KVBFtSuCm0&feature=3Dyoutu.be=0A> =0A> http://www.cs= .dartmouth.edu/~xia/papers/buildsys17-3dprint.pdf=0A> =0A> https://homes.cs= .washington.edu/~jucha/docs/3dprint-hotw.pdf=0A> =0A> On 28 November 2017 a= t 17:57, Toke H=C3=B8iland-J=C3=B8rgensen=0A> wrote:=0A> > S= upposed to be 3D-printed to point the signal in the right direction. Can't= =0A> find the paper, just the press release:=0A> https://www.eurekalert.org= /pub_releases/2017-11/dc-aw110717.php=0A> >=0A> > -Toke=0A> > _____________= __________________________________=0A> > Make-wifi-fast mailing list=0A> > = Make-wifi-fast@lists.bufferbloat.net=0A> > https://lists.bufferbloat.net/li= stinfo/make-wifi-fast=0A> _______________________________________________= =0A> Make-wifi-fast mailing list=0A> Make-wifi-fast@lists.bufferbloat.net= =0A> https://lists.bufferbloat.net/listinfo/make-wifi-fast ------=_20171128152234000000_32611 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Thanks. Reviewing = the paper, all it claims is that "signal strength" is increased in desired = areas. The impact on MIMO and DSSS decoding of the phase mixing is unclear,= but the reflector appears to be small - about the same size as the AP..=0A

 

=0A

There is som= e assertion at the beginning of the paper that it is more fine grained than= MIMO in its control. But they don't demonstrate that in the paper, and don= 't provide any theoretical justification.

=0A

&nbs= p;

=0A

So it's kind of cute, but I'm skeptical of = its actual utility relative to other "dynamic" approaches that can optimize= for situations like door positions, furniture movement, etc.

=0A

 

=0A

A hybrid approach inclu= ding a reflector and 4x4 MIMO might be good, but getting that optimized is = more complex than just optimizing RSSI.

=0A

 =

=0A=0A<= p style=3D"margin:0;padding:0;font-family: verdana; font-size: 10pt; overfl= ow-wrap: break-word;">

On Tuesday, November 28, 2017 1:29pm, "Br= uno Antunes" <baantunes@gmail.com> said:

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=0A

> The links for the pap= ers are on the youtube video description:
>
> https://www.= youtube.com/watch?v=3D1KVBFtSuCm0&feature=3Dyoutu.be
>
&g= t; http://www.cs.dartmouth.edu/~xia/papers/buildsys17-3dprint.pdf
>=
> https://homes.cs.washington.edu/~jucha/docs/3dprint-hotw.pdf>
> On 28 November 2017 at 17:57, Toke H=C3=B8iland-J=C3=B8r= gensen
> <toke@toke.dk> wrote:
> > Supposed to be = 3D-printed to point the signal in the right direction. Can't
> find= the paper, just the press release:
> https://www.eurekalert.org/pu= b_releases/2017-11/dc-aw110717.php
> >
> > -Toke
> > _______________________________________________
> > M= ake-wifi-fast mailing list
> > Make-wifi-fast@lists.bufferbloat.= net
> > https://lists.bufferbloat.net/listinfo/make-wifi-fast> _______________________________________________
> Make-wifi= -fast mailing list
> Make-wifi-fast@lists.bufferbloat.net
>= https://lists.bufferbloat.net/listinfo/make-wifi-fast

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