FPGA Central - World's 1st FPGA / CPLD Portal

FPGA Central

World's 1st FPGA Portal

		FPGA Groups > NewsGroup > DSP
basic question about GMSK derotation

Mark Forums Read

DSP comp.dsp newsgroup, mailing list

Reply

#1 (permalink)

Old

05-30-2009, 07:37 PM

Pat Z

Guest

Posts: n/a

Default

basic question about GMSK derotation

Hi,

GMSK transmits 1 or 0 with +67.7k or -67.7k, and with each symbol,
the phase change is pi/2. Now, is that true the receiver just
corrolate and able to find out this is 1 or 0 already. why need to
derotate?

thanks

Reply With Quote

#2 (permalink)

Old

05-30-2009, 08:02 PM

Vladimir Vassilevsky

Guest

Posts: n/a

Default

Re: basic question about GMSK derotation

Pat Z wrote:
> Hi,
>
> GMSK transmits 1 or 0 with +67.7k or -67.7k,

No.
Think what the letter "G" in GMSK means.

VLV

Reply With Quote

Reply

Bookmarks

« MUD for CDMA using MMSE | All Digital PLL Design »

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
derotation of GMSK I Q samples	pzou	DSP	3	05-19-2009 09:06 PM
GMSK/MSK constellation derotation and Channel impulse responseestimation	ane	DSP	4	12-27-2008 06:05 AM
GMSK Question	ik303	DSP	2	02-14-2007 05:38 PM
GMSK demodulation question	John Sampson	DSP	1	12-01-2003 06:13 PM
Basic dsp question	srikoll	DSP	3	10-19-2003 12:50 AM

All times are GMT +1. The time now is 03:43 PM.