HDL-Optimized System Design

Choose algorithms for wireless communications hardware system design

These blocks implement hardware-friendly architectures and support HDL code generation when used with HDL Coder™. The blocks on this page also have streaming interfaces that process a single sample or a vector of samples at a time, hardware control signals, and options to select different hardware implementations of their algorithms.

Blocks

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Block Coding

CCSDS RS Encoder	Encode message into RS codeword according to CCSDS standard
CCSDS RS Decoder	Decode and recover message from RS codeword according to CCSDS standard
CCSDS LDPC Decoder	Decode LDPC code according to CCSDS standard
DVB-S2 BCH Decoder	Decode and recover message from BCH codeword according to DVB-S2 standard
DVB-S2 LDPC Decoder	Decode LDPC code according to DVB-S2 standard
NR LDPC Encoder	Perform LDPC encoding according to 5G NR standard
NR LDPC Decoder	Decode LDPC code according to 5G NR standard
NR Polar Encoder	Perform polar encoding according to 5G NR standard
NR Polar Decoder	Perform polar decoding according to 5G NR standard
WLAN LDPC Decoder	Decode LDPC code according to WLAN standard
RS Encoder	Encode message to RS codeword
RS Decoder	Decode and recover message from RS codeword
LDPC Encoder	Encode quasi-cyclic low-density parity-check code

Convolutional Coding

APP Decoder	Decode convolutionally-coded LLR values using MAP algorithm
LTE Convolutional Encoder	Encode binary samples using tail-biting convolutional algorithm
LTE Convolutional Decoder	Decode convolutional-encoded samples using Viterbi algorithm
LTE Turbo Encoder	Encode binary samples using turbo algorithm
LTE Turbo Decoder	Decode turbo-encoded samples
Convolutional Encoder	Encode data bits using convolution coding — optimized for HDL code generation
Puncturer	Punctures data according to puncture vector
Depuncturer	Reverse puncturing scheme to prepare for decoding
Viterbi Decoder	Decode convolutionally encoded data using Viterbi algorithm

Cyclic Redundancy Check (CRC) Coding

LTE CRC Encoder	Generate checksum and append to input sample stream
LTE CRC Decoder	Detect errors in input samples using checksum
NR CRC Encoder	Generate CRC code bits and append them to input data
NR CRC Decoder	Detect errors in input data using CRC

Modulation

DVB-S2 Symbol Demodulator	Demodulate complex constellation symbol to set of LLR values or data bits according to DVB-S2 standard
DVB-S2 Symbol Modulator	Modulate data bits to complex constellation symbols according to DVB-S2 standard
LTE OFDM Modulator	Modulate LTE resource grid and return time-domain OFDM samples
LTE OFDM Demodulator	Demodulate time-domain OFDM samples and return LTE resource grid
LTE Symbol Modulator	Modulate data bits to complex LTE data symbols
LTE Symbol Demodulator	Demodulate complex LTE data symbols to data bits or LLR values
NR Symbol Modulator	Modulate data bits to complex NR data symbols
NR Symbol Demodulator	Demodulate complex NR data symbols to data bits or LLR values
FFT 1536	Computes fast-fourier-transform (FFT) for LTE standard transmission bandwidth of 15 MHz
OFDM Channel Estimator	Estimate channel using input data and reference subcarriers
OFDM Equalizer	Equalize OFDM data using channel estimates
OFDM Modulator	Modulate frequency-domain OFDM subcarriers to time-domain samples for custom communication protocols
OFDM Demodulator	Demodulate time-domain OFDM samples and return subcarriers for custom communication protocols
Symbol Demodulator	Demodulate complex constellation symbol to set of LLR values or data bits

Utilities

LTE Gold Sequence Generator

Generate Gold sequence

Featured Examples

Sample Rate Conversion for an LTE Receiver

Implement a sample rate converter for an LTE receiver front end.

Open Script

HDL Code Generation for Filtered OFDM (F-OFDM) Transmitter

Filter symbols after the IFFT to improve bandwidth while maintaining orthogonality.

Open Script

HDL Implementation of Variable-Size FFT

Implement variable-size FFT by using single FFT core.

Open Script

Accelerate BER Measurement for Wireless HDL LTE Turbo Decoder

The workflow to measure the BER of the Wireless HDL Toolbox™ LTE Turbo Decoder block using parsim to parallelize the simulations across EbNo points. This approach can be used to accelerate other Monte Carlo simulations.

Open Script

HDL Implementation of AWGN Generator

Implement AWGN generator that is optimized for HDL code generation and hardware implementation.

Open Example

HDL Interleaver and Deinterleaver

Design and implement interleaving and deinterleaving in communication systems.

Open Script

Encode Streaming Data Using General CRC Generator HDL Optimized Block for 5G NR Standard

Encode streaming data using General CRC Generator according to 5G NR standard.

Open Script

HDL Implementation of Digital Predistorter

Implement Digital Predistorter that is optimized for HDL code generation and hardware implementation.

Open Example

HDL Implementation of Digital Predistorter with LMS Coefficient Estimation

Implement DPD with LMS coefficients and pre-calculated coefficients optimized for HDL code generation.

Open Model

DVB-S2 HDL LDPC Encoder

Implement DVB-S2 LDPC encoding using Simulink® blocks that are optimized for HDL code generation.

Open Script

DVB-S2 HDL BCH Encoder

Implement DVB-S2 BCH encoder using Simulink® blocks that are optimized for HDL code generation.

Open Script

WLAN HDL LDPC Encoder

Implement WLAN LDPC encoder using Simulink® blocks that are optimized for HDL code generation.

Open Script

HDL Neural Network Design for Digital Predistorter

Use neural-network-based (NN-based) digital predistorter (DPD) to compensate the effects of nonlinearities in power amplifier (PA).

Open Example

HDL Digital Automatic Gain Control for Single and Multicarrier Systems

Implement digital AGC for single-carrier and multicarrier systems using Simulink® blocks optimized for HDL code generation.

Open Model

HDL Implementation of SISO Fading Channel

Use SISO fading channel to evaluate the performance of the wireless communication systems over Rayleigh and Rician fading channels.

Open Script