It's obviously pricier than the B11, but if you want true symmetrical and a ton of throughput, you could look at the Huawei RTN-380 radios. These will do 4Gbps (2Gbps symmetrical) at full licensing, or there are 1, 2, 3Gbps licensing options. They use 71-76 GHz and 81-86 GHz and so are super easy and cheap to get (lightly) licensed. These are very popular with carriers outside the US, but not so much in the US because of all the Huawei/Ciscolobby disputes, but that has largely been resolved and they have been getting traction here. Let me know if you want more info, we are Huawei VAR.
John On Wed, Aug 3, 2016 at 9:54 PM, <mbl...@bamicrowave.com> wrote: > Gino, > > That seems to be the only configuration that meets the requirement. The > way I see it, in a traditional FDD system you would license an XPIC pair of > frequencies, say 11075 H/V at point A and 11565 H/V at point B. Assuming > an 820 running 256QAM you might get 500mbps per polarity per direction, for > a two-way aggregate of 2gpbs. You would have licensed 160MHz at each end > of the system, for a system efficiency of 2gbps/320MHz = 6 b/s/hz. > If you operate a B11 on the same pair of frequencies, you have to use > their FD mode which a typical PCN claims will deliver 736mbps. It would > seem that this can be viewed as a two-way aggregate rate, because the > radios still take turns transmitting as in a true TDMA system. So, the > system efficiency here is 736mbps/320MHz = 2.3 b/s/hz -- below the > requirement of 3 b/s/hz. > > If you switch the B11 to the normal TDMA mode you will need to transmit on > the same frequency from each end of the link. So, in addition to licensing > 11075 H and V transmitting from point A, you also need to license 11075 H > and V transmitting from point B, which adds another 160MHz at each end. The > PCNs show this configuration giving 1.47gbps (again assumed to be an > aggregate figure due to the TDMA mode). This is an efficiency of > 1.47gbps/640MHz = 2.3 b/s/hz again. However, because you have licensed two > frequency pairs, each site can also transmit and receive on the unused > 11565 H and V frequencies. If you do this then you get 2*1.47gbps/640MHz = > 4.6 b/s/hz. This seems to be the only valid configuration, but does this > take two radios at each end, or just one? > > Mike Black > > Black & Associates > > 727-773-9016 > > > ---------------------------- Original Message ---------------------------- > Subject: Re: [AFMUG] B11 > From: "Gino Villarini" <ginovi...@gmail.com> > Date: Wed, August 3, 2016 3:38 pm > To: "Animal Farm" <af@afmug.com> > -------------------------------------------------------------------------- > > > > but the radio tx in both channels in the both polarites in both ends ... > > > > On Wed, Aug 3, 2016 at 1:31 PM, Eric Kuhnke <eric.kuh...@gmail.com> > wrote: > > > >> No, it is just as spectrally efficient as any 256QAM radio... One 80 MHz > >> "low" channel in both polarities and one 80 MHz "high" channel in both > >> polarities, as a typical FDD band plan such as you would use with a > >> configuration with 2 dishes, 2 orthomode transducers and 4 radio heads > >> (each radio operating in a single polarity) in a 2+0 configuration. > >> > >> You're arriving at the figure of 320 MHz by counting everything twice. > >> > >> On Wed, Aug 3, 2016 at 10:28 AM, <mbl...@bamicrowave.com> wrote: > >> > >>> We haven't had the pleasure of coordinating a B11 link yet, but they > >>> certainly seem to be popular based upon the number of PCNs we are > >>> seeing. So, a dumb question hopefully based upon a simple > misunderstanding > >>> of the numbers: I don't see how this meets the FCC minimum efficiency > >>> standards for wide channels at 11GHz: > >>> > >>> 80MHz channels x H and V = 160MHz, but with high/low pairing you double > >>> this? to 320MHz occupied per end? So, to meet the 3 b/s/hz requirement > at > >>> 11GHz your symmetrical throughput would need to be >= 960mbps. What am > I > >>> missing? > >>> > >>> Mike Black > >>> > >>> Black & Associates > >>> > >>> 727-773-9016 > >>> > >>> > >>> ---------------------------- Original Message > ---------------------------- > >>> Subject: Re: [AFMUG] B11 > >>> > From: "Jaime Fink" <ja...@mimosa.co> > >>> Date: Tue, August 2, 2016 4:49 pm > >>> To: "SmarterBroadband" <li...@smarterbroadband.com> > >>> "af@afmug.com" <af@afmug.com> > >>> ------------------------------------------------------------ > -------------- > >>> > >>> > The PHY is 1733 Mbps aggregate, so depending on the chosen window > >>> sizes, the top real world TCP speeds we’ve seen are between 1200-1300 > Mbps > >>> aggregate (75/25 or 50/50 mode), or 600-650 Mbps symmetric (50/50). > >>> > > >>> > For 11 GHz this assumes high/low pairing of 80 MHz and both > >>> polarizations coordinated. > >>> > > >>> > Jaime Fink • Mimosa<http://www.mimosa.co> • CPO & Co-Founder > >>> > > >>> > > >>> > On August 2, 2016 at 1:34:31 PM, SmarterBroadband ( > >>> li...@smarterbroadband.com<mailto:li...@smarterbroadband.com>) wrote: > >>> > Can the B11 do 1Gbps Symmetrical? > >>> > If not what is best Symmetrical? > >>> > Thanks > >>> > > >>> > > >>> > > >>> > >> > >> > > > >
