electronics forum

Rules | Recent posts | topic RSS | Search | Register  | Log in

Wireless tranceiver modules help needed
Post new topic  Reply to topic    EDAboard.com Forum Index -> Digital communication -> Wireless tranceiver modules help needed
Author Message
elockpicker



Joined: 25 Jul 2008
Posts: 19
Helped: 1
Post05 Jul 2009 7:47   

Wireless tranceiver modules help needed
Hello,
I'm responsible for designing a communication system for a robot,the system is supposed to send simple movement commands.
I want to use digital tranceiver modules (RFM12 for example) with AVR microcontrollers.
The robot is supposed to participate in a competition where many other robots might use the same module and the same frequency at the same time.
Many wireless modules using FSK modulation claim robustness to interference.
I need to know what does it mean "robust to interference",is it still true in a situation like a competition ???

What can I do to make sure that the robot is really robust to interference ??

Please help me.
Thank you very much
Back to top
dipnirvana



Joined: 23 Jan 2009
Posts: 207
Helped: 21
Location: India
Post06 Jul 2009 4:28   

Re: Wireless tranceiver modules help needed
Use FHSS (frequency hop spread spectrum) so that even if the channel is blocked/used by other robots you may switch to other channel and able to communicate.
Back to top
elockpicker



Joined: 25 Jul 2008
Posts: 19
Helped: 1
Post06 Jul 2009 18:35   

Re: Wireless tranceiver modules help needed
Thank you very much sir,but as you know wireless tranceiver modules have a fixed frequency of operation (that can be changed of course, but we will loose the connection),furthermore they usually use FSK modulation.I think I can not change the fundamental properties of such modules.Is there any more feasible method ?
Back to top
dipnirvana



Joined: 23 Jan 2009
Posts: 207
Helped: 21
Location: India
Post07 Jul 2009 4:23   

Re: Wireless tranceiver modules help needed
well i haven't looked deep, but wt u can do is devide available bandwidth into the channels and use it.
Back to top
elockpicker



Joined: 25 Jul 2008
Posts: 19
Helped: 1
Post07 Jul 2009 11:23   

Wireless tranceiver modules help needed
thank you very much
Back to top
ctownsend



Joined: 27 Nov 2004
Posts: 301
Helped: 21
Location: Canada
Post07 Jul 2009 13:53   

Re: Wireless tranceiver modules help needed
It will help a lot if you post the datasheet of the modules you are using.
Back to top
Google
AdSense
Google Adsense
Post07 Jul 2009 13:53   

Ads


Back to top
elockpicker



Joined: 25 Jul 2008
Posts: 19
Helped: 1
Post07 Jul 2009 18:02   

Re: Wireless tranceiver modules help needed
This is the datasheet of one possible tranceiver.

Sorry, but you need login in to view this attachment
Back to top
Arabic versionBulgarian versionCatalan versionCzech versionDanish versionGerman versionGreek versionEnglish versionSpanish versionFinnish versionFrench versionHindi versionCroatian versionIndonesian versionItalian versionHebrew versionJapanese versionKorean versionLithuanian versionLatvian versionDutch versionNorwegian versionPolish versionPortuguese versionRomanian versionRussian versionSlovak versionSlovenian versionSerbian versionSwedish versionTagalog versionUkrainian versionVietnamese versionChinese version
Post new topic  Reply to topic    EDAboard.com Forum Index -> Digital communication -> Wireless tranceiver modules help needed
Page 1 of 1 All times are GMT + 1 Hour
Similar topics:
Low power RF Tranceiver modules...need help (4)
Half duplex RF tranceiver by using LINX RF modules (2)
UHF/VHF wireless modules?? (10)
Choosing RF tranceiver. please help (22)
help ofdm tranceiver chip design (2)
If I use both Sync modules and async modules in my Chip, (1)
Could Verilog modules used together with VHDL modules? (7)
Wireless Pc Remote - Help Needed, Complete Newbie (1)
Wireless Shift Box, Slight Redesign Help Needed. (7)
help with 3v rf modules (11)


Abuse || Administrator || Moderators || Support us || sitemap
topic RSS