TAILIEUCHUNG - Digital Communication I: Modulation and Coding Course-Lecture 13

The properties of Convolutional codes. We introduced interleaving as a means to combat bursty errors by making the channel seem uncorrelated. We also studied “Concatenated codes” that simply consist of inner and outer codes. They can provide the required performance at a lower complexity. | Digital Communications I: Modulation and Coding Course Term 3 - 2008 Catharina Logothetis Lecture 13 Lecture 13 Last time, we talked about: The properties of Convolutional codes. We introduced interleaving as a means to combat bursty errors by making the channel seem uncorrelated. We also studied “Concatenated codes” that simply consist of inner and outer codes. They can provide the required performance at a lower complexity. Lecture 13 Today, we are going to talk about: Shannon limit Comparison of different modulation schemes Trade-off between modulation and coding Lecture 13 Goals in designing a DCS Goals: Maximizing the transmission bit rate Minimizing probability of bit error Minimizing the required power Minimizing required system bandwidth Maximizing system utilization Minimize system complexity Lecture 13 Error probability plane (example for coherent MPSK and MFSK) Bit error probability M-PSK M-FSK k=1,2 k=3 k=4 k=5 k=5 k=4 k=2 k=1 bandwidth-efficient power-efficient Lecture .

• Điện - Điện tử
• digital communication
• multiuser communication
• multicarrier system
• adaptive equalization
• filter channel
• soure coding
• Communication systems
• Digital communication systems