[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Building an RF Front end for DSP FPGA Kits with A
|
From: |
Moeller |
|
Subject: |
Re: [Discuss-gnuradio] Building an RF Front end for DSP FPGA Kits with ADCs |
|
Date: |
Sat, 15 Jan 2011 11:16:33 +0100 |
|
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 |
On 13.01.2011 22:59, sirjanselot wrote:
> The reason why I do not want to attenuate is because I want to receive a
> high-powered signal and low-powered signal at the same frequency.
Can you be more specific? This is an interesting topic.
In most cases the signals cannot be separated any more.
You have certain chances if you want to seperate spread spectrum
signals or TDMA signals. For TDMA you can operate above the saturation
level, below the destruction level. For direct sequence CDMA this is
similar to the near far effect, the high powered signal will create
interference. Your success will then also depend on the spreading factor
(correlation lengths).