4.18.9 What Are Convolutional Codes, Turbo Codes, LDPC Codes, And Polar Codes?
Discover the powerful coding techniques that enable modern communication systems to operate close to the Shannon limit. Learn how convolutional, turbo, LDPC, and polar codes revolutionized error correction in wireless, satellite, and deep-space communications.
4.7.10 What Is Forward Error Correction and Automatic Repeat Request?
Understand the two major approaches to achieving reliable communication. Learn how Forward Error Correction (FEC) corrects errors without retransmission and how Automatic Repeat Request (ARQ) uses acknowledgments and retransmissions to ensure data integrity.
- What Is a Convolutional Code?
- Why Are They Called Convolutional Codes?
- How Does a Convolutional Encoder Work?
- What Is Constraint Length?
- What Is Code Rate?
- What Is a Trellis Diagram?
- What Is Viterbi Decoding?
- Why Was the Viterbi Algorithm Important?
- Where Were Convolutional Codes Used?
- What Are the Limitations of Convolutional Codes?
- What Are Turbo Codes?
- Why Are They Called Turbo Codes?
- How Does a Turbo Encoder Work?
- What Is an Interleaver?
- How Does Turbo Decoding Work?
- How Close Do Turbo Codes Come to Capacity?
- What Are LDPC Codes?
- Why Are They Called Low-Density Parity-Check Codes?
- How Are LDPC Codes Decoded?
- Why Are LDPC Codes Important?
- Where Are LDPC Codes Used?
- What Are Polar Codes?
- What Is Channel Polarization?
- Why Are Polar Codes Important?
- Where Are Polar Codes Used?
- How Do These Codes Compare?
- Which Performs Best?
- How Close Do Modern Codes Come to the Shannon Limit?
- Why Are Convolutional, Turbo, LDPC, and Polar Codes Important?