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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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CCSDS RS EncoderEncode message into RS codeword according to CCSDS standard (Since R2022a)
CCSDS RS DecoderDecode and recover message from RS codeword according to CCSDS standard (Since R2021b)
CCSDS LDPC DecoderDecode LDPC code according to CCSDS standard (Since R2022b)
DVB-S2 BCH DecoderDecode and recover message from BCH codeword according to DVB-S2 standard (Since R2022a)
DVB-S2 LDPC DecoderDecode LDPC code according to DVB-S2 standard (Since R2022a)
NR LDPC EncoderPerform LDPC encoding according to 5G NR standard (Since R2020a)
NR LDPC DecoderDecode LDPC code according to 5G NR standard (Since R2020a)
NR Polar EncoderPerform polar encoding according to 5G NR standard (Since R2020a)
NR Polar DecoderPerform polar decoding according to 5G NR standard (Since R2020a)
WLAN LDPC Decoder Decode LDPC code according to WLAN standard (Since R2021b)
RS EncoderEncode message to RS codeword (Since R2020b)
RS DecoderDecode and recover message from RS codeword (Since R2020a)
LDPC EncoderEncode quasi-cyclic low-density parity-check code (Since R2023a)
LDPC DecoderDecode quasi-cyclic low-density parity-check code (Since R2023b)
APP DecoderDecode convolutionally-coded LLR values using MAP algorithm (Since R2021b)
LTE Convolutional EncoderEncode binary samples using tail-biting convolutional algorithm
LTE Convolutional DecoderDecode convolutional-encoded samples using Viterbi algorithm
LTE Turbo EncoderEncode binary samples using turbo algorithm
LTE Turbo DecoderDecode turbo-encoded samples
Convolutional EncoderEncode data bits using convolution coding — optimized for HDL code generation (Since R2019b)
PuncturerPunctures data according to puncture vector (Since R2019b)
DepuncturerReverse puncturing scheme to prepare for decoding
Viterbi DecoderDecode convolutionally encoded data using Viterbi algorithm
LTE CRC EncoderGenerate checksum and append to input sample stream
LTE CRC Decoder Detect errors in input samples using checksum
NR CRC EncoderGenerate CRC code bits and append them to input data (Since R2021a)
NR CRC DecoderDetect errors in input data using CRC (Since R2021a)
DVB-S2 Symbol DemodulatorDemodulate complex constellation symbol to set of LLR values or data bits according to DVB-S2 standard (Since R2021b)
DVB-S2 Symbol ModulatorModulate data bits to complex constellation symbols according to DVB-S2 standard (Since R2022b)
LTE OFDM ModulatorModulate LTE resource grid and return time-domain OFDM samples
LTE OFDM DemodulatorDemodulate time-domain OFDM samples and return LTE resource grid
LTE Symbol ModulatorModulate data bits to complex LTE data symbols
LTE Symbol DemodulatorDemodulate complex LTE data symbols to data bits or LLR values (Since R2019b)
NR Symbol ModulatorModulate data bits to complex NR data symbols
NR Symbol DemodulatorDemodulate complex NR data symbols to data bits or LLR values (Since R2019b)
FFT 1536Computes fast-fourier-transform (FFT) for LTE standard transmission bandwidth of 15 MHz (Since R2019b)
OFDM Channel Estimator Estimate channel using input data and reference subcarriers (Since R2020a)
OFDM EqualizerEqualize OFDM data using channel estimates (Since R2021a)
OFDM ModulatorModulate frequency-domain OFDM subcarriers to time-domain samples for custom communication protocols (Since R2020a)
OFDM DemodulatorDemodulate time-domain OFDM samples and return subcarriers for custom communication protocols (Since R2019b)
Symbol DemodulatorDemodulate complex constellation symbol to set of LLR values or data bits (Since R2022a)
GMSK ModulatorModulate data bits using Gaussian minimum shift keying (GMSK) method (Since R2024a)
LTE Gold Sequence GeneratorGenerate Gold sequence