baseband hopping question This topic has 9 replies, 1 voice, and was last updated 12 years, 6 months ago by Masud Parvez. Viewing 10 posts - 1 through 10 (of 10 total) Author Posts 29th May 2007 at 15:26 #47514 rf fanGuest Hi all, I’ve question about small BTS configuration with two or tree TRX per sector with baseband hopping. In wich case i’ll have more advantages: cyclyc hopping (HSN=0) or pseudo random hopping (HSN=3-63) ? Thaks ! 29th May 2007 at 17:43 #47515 PixGuest Keep it simple : always use pseudo random hopping, because cyclic hopping can lead to cyclic interferences 🙂 29th May 2007 at 19:29 #47516 rf fanGuest 10X Pix, i’ll do that. But it’s intrested … when is cyclic hopping necessary ? 30th May 2007 at 10:05 #47517 pixGuest RF Fan, Ok, that’s a good question… In my opinion, never… Maybe someone else has some better answer ? It would require that you carefully plan the MAIO and MAI, to avoid running to sets of identical frequencies using the same cyclic law, in different cells. To much trouble 🙂 30th May 2007 at 12:20 #47518 TomarGuest Hi all, cyclic hopping is posible to use in case, that you have synchronized network (with GPS). Cyclic hopping has litle bit better performance, than random hopping. BR Tomar 30th May 2007 at 16:01 #47519 PixGuest Hello Tomar, Do you know operators that use GPS-synchro GSM networks ? I wonder if it exists or not…? It must cost a lot of money, for very little improvement in terms of performances. 30th May 2007 at 16:05 #47520 TomarGuest Hi Pix, somebody told me, that some operator in USA use this feature. I know that Siemens has this feature. BR Tomar 30th May 2007 at 17:21 #47521 rf fanGuest Thank you boys, I don’t know what is principle of GPS-synchro GSM networks. Please tell me more about this (just for my studiousness) 🙂 🙂 22nd March 2010 at 07:09 #47522 JainamGuest what is the advantages and disadvantages of baseband and synthesizer hoping? 6th August 2010 at 10:39 #47523 Masud ParvezGuest what is the advantages and disadvantages of baseband and synthesizer hoping? Author Posts Viewing 10 posts - 1 through 10 (of 10 total) The forum ‘Telecom Design’ is closed to new topics and replies.