TD-SCDMA HSDPA Downlink HS-DSCH HS-SCCH HS-SICH Physical Layer Coding with MATLAB Implementation

This project provides MATLAB simulation for TD-SCDMA HSDPA downlink physical layer coding of HS-DSCH, HS-SCCH, and HS-SICH channels, covering CRC encoding, turbo coding, bit separation, rate matching, bit scrambling, interleaving, and physical channel mapping. The main simulation files are Encode_HS_SCCH.m, Encode_HS_DSCH.m, and Encode_HS_SICH.m, which implement the complete encoding chain using MATLAB's communication toolbox functions.

To perform MATLAB simulation of TD-SCDMA HSDPA downlink HS-DSCH, HS-SCCH, and HS-SICH physical layer coding, the process begins with CRC encoding using cyclic redundancy check algorithms for error detection. Next, turbo coding is implemented with parallel concatenated convolutional codes (PCCC) for forward error correction. The encoded bits then undergo separation into systematic and parity components, followed by rate matching using puncture and repetition algorithms to adapt to different transmission rates. For enhanced security, bit scrambling is applied using pseudo-random sequences. Finally, block interleaving is performed to mitigate burst errors, and the processed bits are mapped to physical channels using constellation mapping techniques.

Beyond the encoding process described above, the simulation requires three main MATLAB files: Encode_HS_SCCH.m, Encode_HS_DSCH.m, and Encode_HS_SICH.m. These files contain comprehensive functions and algorithms including CRC generator polynomials, turbo encoder configurations, rate matching tables, scrambling sequence generators, and interleaving patterns specifically designed for TD-SCDMA HSDPA standards implementation.

These implementation details and code structure are provided to help better understand and implement MATLAB simulation of TD-SCDMA HSDPA downlink HS-DSCH, HS-SCCH, and HS-SICH physical layer coding, with modular functions that allow for parameter customization and performance analysis.