Re: [Discuss-gnuradio] Lock onto QPSK signal

2016-03-19 Thread Henry Barton
ror-resistant than high-order QAM. Sounds like a good choice; so 2.064 Mb/s/(2b/S) = 1.032 MS/s, so I guess you're aiming for a spreading factor > 10? Cheers, Marcus To: discuss-gnuradio@gnu.org From: marcus.muel...@ettus.com Date: Wed, 16 Mar 2016 14:03:32 +0100 Subject: Re:

Re: [Discuss-gnuradio] Lock onto QPSK signal

2016-03-19 Thread Marcus Müller
guess you're aiming for a spreading factor > 10? Cheers, Marcus > > > > > ------------ > To: discuss-gnuradio@gnu.org > From: marcus.muel...@ettus.com > Date: Wed, 16 Mar 2016 14:03:32 +0100 > Subject

Re: [Discuss-gnuradio] Lock onto QPSK signal

2016-03-19 Thread Marcus Müller
Hi Henry, Interesting questions! On 16.03.2016 03:48, Henry Barton wrote: > > Hi, does anyone know of any good tutorials that explain how to lock > onto the clock of a QPSK signal and/or correlate? I know this is all > very simple in GNUradio, but I hope someone knows of a website or, > preferabl

Re: [Discuss-gnuradio] Lock onto QPSK signal

2016-03-18 Thread Henry Barton
t;need high throughput; my project aims to transmit 2.064 Mbit/sec in a 24 MHz >channel in the 900 MHz band. I use QPSK/4QAM because it has 1/2 the bandwidth >of BPSK while still being much more error-resistant than high-order QAM. To: discuss-gnuradio@gnu.org From: marcus.muel...@ettus

[Discuss-gnuradio] Lock onto QPSK signal

2016-03-15 Thread Henry Barton
Hi, does anyone know of any good tutorials that explain how to lock onto the clock of a QPSK signal and/or correlate? I know this is all very simple in GNUradio, but I hope someone knows of a website or, preferably, a video series that will explain this. If I have 10 different QPSK users, sprea