Hi Johnathan, Is your code public yet? On Fri, Jul 17, 2009 at 12:57 AM, Mir M. Ali <mirmurt...@gmail.com> wrote:
> Thanks, I will try this out. > > On Thu, Jul 16, 2009 at 11:34 AM, Colby Boyer <colby.bo...@gmail.com>wrote: > >> In regards to 1. >> >> From what I have experienced, you can multiply the received signal by the >> up sampled PN sequence and still get a good correlation. >> >> However I do not know if the sequence becomes less orthorgonal when you >> this(worse auto-correlation). >> >> On Wed, Jul 15, 2009 at 9:27 AM, Mir M. Ali <mirmurt...@gmail.com> wrote: >> >>> Hi Johnathan, >>> I have a few question regarding implementation. The book that you >>> referred earlier was of great help. Thanks. >>> I am sure this won't take a lot of your time and I would be really glad >>> and thankful to you if you answer them. >>> >>> In the transmitter the data and the PN code is ex-or and then modulated >>> and transmitted. So basically this is a BPSK transmission. At the receiver >>> the received signal is first multiplied by the PN code in order to strip it >>> free of PN code and this happens at the E/P/L correlation and Costas Loop >>> block. Being a BPSK signal this is correct. >>> >>> 1. My question is can I just use the upsampler and multiply the upsampled >>> sequence with the received signal samples? >>> 2. Where will the AGC and the RRC filter go in this arrangement? >>> >>> Any help would be appreciated. >>> Thanks. >>> Ali >>> >>> >>> >>> On Tue, Feb 24, 2009 at 11:23 AM, Johnathan Corgan < >>> jcor...@corganenterprises.com> wrote: >>> >>>> On Mon, Feb 23, 2009 at 8:25 PM, Mir Ali <mirmurt...@gmail.com> wrote: >>>> >>>> > can you suggest me a place where I can find more information about the >>>> phase >>>> > sync and the freq sync methods you used in your work. It will be of >>>> great >>>> > help to me. >>>> >>>> There is plenty of information available via Google. An excellent >>>> reference book is: >>>> >>>> "Fundamentals of Global Positioning System Receivers: A Software >>>> Approach" >>>> Wiley Series in Microwave and Optical Engineering >>>> James Bao-Yen Tsui, 2004 >>>> >>>> Johnathan >>>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> >
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