Channel and Coding Implementation » History » Version 6
Version 5 (PASCHOS, Alexandros, 12/15/2015 01:39 AM) → Version 6/17 (PASCHOS, Alexandros, 12/15/2015 01:39 AM)
h1. Channel and Coding Implementation
After establishing a basic channel, AWGN was then added as shown on figure 5. The AWGN function has an Eb/No input, which is the target Eb/No of the signal (the Eb/No received).
p=. !{width: 60%}https://sourceforge.isae.fr/attachments/download/1503/withAWGN.png(AWGN Implementation)!
_Figure 2.1 Communication Diagram_
In order to further improve the communication chain, coding is applied to this channel, a illustrated in figure 6. At this point, as mentioned in the limitations, synchronization between the two USRP was an issue since the received bits did not keep a fixed value, but rather kept changing (between 0 and 1) throughout the test, giving a BER of 1. For this reason, it was necessary to calculate the BER without the use of USRPs.
p=. !{width: 60%}https://sourceforge.isae.fr/attachments/download/1505/withCoding.png(Channel 60%}https://sourceforge.isae.fr/attachments/download/1503/withCoding.png(Channel and Coding)!
_Figure 2.1 AWGN and Coding_
After establishing a basic channel, AWGN was then added as shown on figure 5. The AWGN function has an Eb/No input, which is the target Eb/No of the signal (the Eb/No received).
p=. !{width: 60%}https://sourceforge.isae.fr/attachments/download/1503/withAWGN.png(AWGN Implementation)!
_Figure 2.1 Communication Diagram_
In order to further improve the communication chain, coding is applied to this channel, a illustrated in figure 6. At this point, as mentioned in the limitations, synchronization between the two USRP was an issue since the received bits did not keep a fixed value, but rather kept changing (between 0 and 1) throughout the test, giving a BER of 1. For this reason, it was necessary to calculate the BER without the use of USRPs.
p=. !{width: 60%}https://sourceforge.isae.fr/attachments/download/1505/withCoding.png(Channel 60%}https://sourceforge.isae.fr/attachments/download/1503/withCoding.png(Channel and Coding)!
_Figure 2.1 AWGN and Coding_