From: Orkhan B. <orx...@gm...> - 2012-03-31 00:05:14
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Hello For OpenBTS with standard usrp equiment, what is the maximum coverage radius outdoors and indoors with maximum power settings? I am using usrp n210 with SBX Thanks -- Orkhan |
From: Kurtis H. <khe...@cs...> - 2012-03-31 00:08:37
|
Depends on a lot of factors. Off the top of my head (and not knowing the output power of a n210), probably tens of meters for line-of-sight coverage. On Fri, Mar 30, 2012 at 5:05 PM, Orkhan Badirkhanli <orx...@gm...> wrote: > Hello > > For OpenBTS with standard usrp equiment, what is the maximum coverage radius > outdoors and indoors with maximum power settings? > > I am using usrp n210 with SBX > > Thanks > > -- > Orkhan > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > |
From: Ben H. <ben...@et...> - 2012-03-31 00:22:47
|
Output power is determined by your daughterboard, not the motherboard. SBX has a max transmit power of 20 dBm - you'll have to figure out the distance based on your link budget =) Cheers, Ben ---------------------------- Ben Hilburn <http://goo.gl/5DdZ3> @ Ettus Research, LLC<http://www.ettus.com/> On Fri, Mar 30, 2012 at 5:07 PM, Kurtis Heimerl <khe...@cs...>wrote: > Depends on a lot of factors. Off the top of my head (and not knowing > the output power of a n210), probably tens of meters for line-of-sight > coverage. > > On Fri, Mar 30, 2012 at 5:05 PM, Orkhan Badirkhanli <orx...@gm...> > wrote: > > Hello > > > > For OpenBTS with standard usrp equiment, what is the maximum coverage > radius > > outdoors and indoors with maximum power settings? > > > > I am using usrp n210 with SBX > > > > Thanks > > > > -- > > Orkhan > > > > > ------------------------------------------------------------------------------ > > This SF email is sponsosred by: > > Try Windows Azure free for 90 days Click Here > > http://p.sf.net/sfu/sfd2d-msazure > > _______________________________________________ > > Openbts-discuss mailing list > > Ope...@li... > > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > > > > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > |
From: David B. <da...@ra...> - 2012-03-31 02:19:59
|
Probably just 10-20 meters. The main thing limiting your range will be uplink/downlink isolation. You'll probably get better range by turned *down* the power to something like 5-10 mW. On Mar 30, 2012, at 5:05 PM, Orkhan Badirkhanli wrote: > Hello > > For OpenBTS with standard usrp equiment, what is the maximum coverage radius outdoors and indoors with maximum power settings? > > I am using usrp n210 with SBX > > Thanks > > -- > Orkhan > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss David A. Burgess, CEO Range Networks, Inc. San Francisco cell +1 707 208 2622 ____________________________________________ Cellular networks made simple and affordable. http://www.rangenetworks.com ____________________________________________ |
From: Orkhan B. <orx...@gm...> - 2012-03-31 10:01:44
|
Appreciate your comments So, to make the coverage be extended to for example 50m, I will need a special daughterboard right?(and if I am not wrong ettus only has RFX900 and RFX1200 with 200mW, which does not change the coverage much) In the CLI of OpenBTS the power is represented in dB - not dBm. Are they meant to be the same? Also, the rxgain command in the CLI can only set power levels between 0 and 38dB. Surely, the value can also be set by config command but, why does rxgain sets values in only that range? Thank you On Sat, Mar 31, 2012 at 5:19 AM, David Burgess <da...@ra...>wrote: > > Probably just 10-20 meters. The main thing limiting your range will be > uplink/downlink isolation. You'll probably get better range by turned > *down* the power to something like 5-10 mW. > > > On Mar 30, 2012, at 5:05 PM, Orkhan Badirkhanli wrote: > > Hello > > For OpenBTS with standard usrp equiment, what is the maximum coverage > radius outdoors and indoors with maximum power settings? > > I am using usrp n210 with SBX > > Thanks > > -- > Orkhan > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > > http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > > > David A. Burgess, CEO > Range Networks, Inc. > San Francisco > cell +1 707 208 2622 > ____________________________________________ > > Cellular networks made simple and affordable. > http://www.rangenetworks.com > ____________________________________________ > > > -- Orkhan |
From: Akib S. <aki...@gm...> - 2012-03-31 10:08:52
|
no you dont need seperate daughter board. you need to isolate that uplink and downlink. you can achieve this using duplexer . please refer sylvain project for this. on his website. On Sat, Mar 31, 2012 at 3:31 PM, Orkhan Badirkhanli <orx...@gm...> wrote: > Appreciate your comments > > So, to make the coverage be extended to for example 50m, I will need a > special daughterboard right?(and if I am not wrong ettus only has RFX900 and > RFX1200 with 200mW, which does not change the coverage much) > > In the CLI of OpenBTS the power is represented in dB - not dBm. Are they > meant to be the same? > > Also, the rxgain command in the CLI can only set power levels between 0 and > 38dB. Surely, the value can also be set by config command but, why does > rxgain sets values in only that range? > > Thank you > > > On Sat, Mar 31, 2012 at 5:19 AM, David Burgess <da...@ra...> > wrote: >> >> >> Probably just 10-20 meters. The main thing limiting your range will be >> uplink/downlink isolation. You'll probably get better range by turned >> *down* the power to something like 5-10 mW. >> >> >> On Mar 30, 2012, at 5:05 PM, Orkhan Badirkhanli wrote: >> >> Hello >> >> For OpenBTS with standard usrp equiment, what is the maximum coverage >> radius outdoors and indoors with maximum power settings? >> >> I am using usrp n210 with SBX >> >> Thanks >> >> -- >> Orkhan >> >> ------------------------------------------------------------------------------ >> This SF email is sponsosred by: >> Try Windows Azure free for 90 days Click Here >> >> http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ >> Openbts-discuss mailing list >> Ope...@li... >> https://lists.sourceforge.net/lists/listinfo/openbts-discuss >> >> >> David A. Burgess, CEO >> Range Networks, Inc. >> San Francisco >> cell +1 707 208 2622 >> ____________________________________________ >> >> Cellular networks made simple and affordable. >> http://www.rangenetworks.com >> ____________________________________________ >> >> > > > > -- > Orkhan > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > -- Akib Sayyed Matrix-Shell aki...@gm... aki...@ma... Mob:- +91-966-514-2243 |
From: Tomas K. <de...@vo...> - 2012-04-02 23:18:45
|
Hi, I'm considering to purchase duplexers from China, which are quite cheap e.g. http://www.alibaba.com/product-gs/523380531/low_cost_GSM_duplexer.html http://www.alibaba.com/product-gs/254132861/GSM_Duplexer.html Tomas > no you dont need seperate daughter board. you need to isolate that > uplink and downlink. > you can achieve this using duplexer . > please refer sylvain project for this. on his website. > On Sat, Mar 31, 2012 at 3:31 PM, Orkhan Badirkhanli <orx...@gm...> wrote: >> Appreciate your comments >> >> So, to make the coverage be extended to for example 50m, I will need a >> special daughterboard right?(and if I am not wrong ettus only has RFX900 and >> RFX1200 with 200mW, which does not change the coverage much) >> >> In the CLI of OpenBTS the power is represented in dB - not dBm. Are they >> meant to be the same? >> >> Also, the rxgain command in the CLI can only set power levels between 0 and >> 38dB. Surely, the value can also be set by config command but, why does >> rxgain sets values in only that range? >> >> Thank you >> >> >> On Sat, Mar 31, 2012 at 5:19 AM, David Burgess <da...@ra...> >> wrote: >>> >>> Probably just 10-20 meters. The main thing limiting your range will be >>> uplink/downlink isolation. You'll probably get better range by turned >>> *down* the power to something like 5-10 mW. >>> >>> >>> On Mar 30, 2012, at 5:05 PM, Orkhan Badirkhanli wrote: >>> >>> Hello >>> >>> For OpenBTS with standard usrp equiment, what is the maximum coverage >>> radius outdoors and indoors with maximum power settings? >>> >>> I am using usrp n210 with SBX >>> >>> Thanks >>> >>> -- >>> Orkhan >>> >>> ------------------------------------------------------------------------------ >>> This SF email is sponsosred by: >>> Try Windows Azure free for 90 days Click Here >>> >>> http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ >>> Openbts-discuss mailing list >>> Ope...@li... >>> https://lists.sourceforge.net/lists/listinfo/openbts-discuss >>> >>> >>> David A. Burgess, CEO >>> Range Networks, Inc. >>> San Francisco >>> cell +1 707 208 2622 >>> ____________________________________________ >>> >>> Cellular networks made simple and affordable. >>> http://www.rangenetworks.com >>> ____________________________________________ >>> >>> >> >> >> -- >> Orkhan >> >> ------------------------------------------------------------------------------ >> This SF email is sponsosred by: >> Try Windows Azure free for 90 days Click Here >> http://p.sf.net/sfu/sfd2d-msazure >> _______________________________________________ >> Openbts-discuss mailing list >> Ope...@li... >> https://lists.sourceforge.net/lists/listinfo/openbts-discuss >> > > |
From: Orkhan B. <orx...@gm...> - 2012-04-04 22:36:52
|
Thanks Akib Can anyone comment on my question on rxgain(CLI command), why it is only configurable between 0 and 38 dB. And does dB actually means dBm in this context? On Sat, Mar 31, 2012 at 1:08 PM, Akib Sayyed <aki...@gm...> wrote: > no you dont need seperate daughter board. you need to isolate that > uplink and downlink. > you can achieve this using duplexer . > please refer sylvain project for this. on his website. > On Sat, Mar 31, 2012 at 3:31 PM, Orkhan Badirkhanli <orx...@gm...> > wrote: > > Appreciate your comments > > > > So, to make the coverage be extended to for example 50m, I will need a > > special daughterboard right?(and if I am not wrong ettus only has RFX900 > and > > RFX1200 with 200mW, which does not change the coverage much) > > > > In the CLI of OpenBTS the power is represented in dB - not dBm. Are they > > meant to be the same? > > > > Also, the rxgain command in the CLI can only set power levels between 0 > and > > 38dB. Surely, the value can also be set by config command but, why does > > rxgain sets values in only that range? > > > > Thank you > > > > > > On Sat, Mar 31, 2012 at 5:19 AM, David Burgess <da...@ra...> > > wrote: > >> > >> > >> Probably just 10-20 meters. The main thing limiting your range will be > >> uplink/downlink isolation. You'll probably get better range by turned > >> *down* the power to something like 5-10 mW. > >> > >> > >> On Mar 30, 2012, at 5:05 PM, Orkhan Badirkhanli wrote: > >> > >> Hello > >> > >> For OpenBTS with standard usrp equiment, what is the maximum coverage > >> radius outdoors and indoors with maximum power settings? > >> > >> I am using usrp n210 with SBX > >> > >> Thanks > >> > >> -- > >> Orkhan > >> > >> > ------------------------------------------------------------------------------ > >> This SF email is sponsosred by: > >> Try Windows Azure free for 90 days Click Here > >> > >> > http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ > >> Openbts-discuss mailing list > >> Ope...@li... > >> https://lists.sourceforge.net/lists/listinfo/openbts-discuss > >> > >> > >> David A. Burgess, CEO > >> Range Networks, Inc. > >> San Francisco > >> cell +1 707 208 2622 > >> ____________________________________________ > >> > >> Cellular networks made simple and affordable. > >> http://www.rangenetworks.com > >> ____________________________________________ > >> > >> > > > > > > > > -- > > Orkhan > > > > > ------------------------------------------------------------------------------ > > This SF email is sponsosred by: > > Try Windows Azure free for 90 days Click Here > > http://p.sf.net/sfu/sfd2d-msazure > > _______________________________________________ > > Openbts-discuss mailing list > > Ope...@li... > > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > > > > > > -- > Akib Sayyed > Matrix-Shell > aki...@gm... > aki...@ma... > Mob:- +91-966-514-2243 > -- Orkhan |
From: Thomas T. <tt...@vt...> - 2012-04-04 23:17:47
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On Wed, Apr 4, 2012 at 6:28 PM, Orkhan Badirkhanli <orx...@gm...> wrote: > Thanks Akib > > Can anyone comment on my question on rxgain(CLI command), why it is only > configurable between 0 and 38 dB. And does dB actually means dBm in this > context? The 'rxgain' command is basically a direct interface to the UHD driver set_rx_gain() and get_rx_gain() calls. These calls allow access to the daughterboard gain settings. http://files.ettus.com/uhd_docs/manual/html/dboards.html The configurable range is determined by the combination of gain elements on the USRP device. dB in this case is an input / output ratio and not a power measurement. Thomas |
From: Orkhan B. <orx...@gm...> - 2012-04-04 23:34:41
|
Right! For some reason I thought of it as power. Anyway, it's clear now. Thanks On Thu, Apr 5, 2012 at 2:15 AM, Thomas Tsou <tt...@vt...> wrote: > On Wed, Apr 4, 2012 at 6:28 PM, Orkhan Badirkhanli <orx...@gm...> > wrote: > > Thanks Akib > > > > Can anyone comment on my question on rxgain(CLI command), why it is only > > configurable between 0 and 38 dB. And does dB actually means dBm in this > > context? > > The 'rxgain' command is basically a direct interface to the UHD driver > set_rx_gain() and get_rx_gain() calls. These calls allow access to the > daughterboard gain settings. > > http://files.ettus.com/uhd_docs/manual/html/dboards.html > > The configurable range is determined by the combination of gain > elements on the USRP device. > > dB in this case is an input / output ratio and not a power measurement. > > Thomas > -- Orkhan |