Digital Communication System Modeling & Simulation for Prediction & Decision

Welcome to Nolta Simulated Systems Software (NSSyssoft).

Announcement:

New Iterative Message-Passing (Belief Propagation) Decoding Bit Error Rate (BER) results for Low-Density Parity-Check (LDPC) Coded Signaling over a Rayleigh Fading Channel (Memory Channel) has now been published on this website. The T1 Professional (T1 V2) system tool now supports LDPC Coded Signaling and Sum-Product Algorithm (SPA) Decoding for the Burst Channel (Classic Bursty with Background Noise & Gilbert-Elliot Burst); Fading Channel (Rayleigh, Rician, & Frequency-Selective); and InterSymbol Interference (ISI) Channel (with Linear Equalizer) Memory Channel models.

VIEW these SPA Decoding of LDPC Coded Signaling over a Rayleigh Fading Channel (Memory Channel) BER results and its analysis and LEARN more about this feature.

New Turbo Decoding Bit Error Rate (BER) results for Turbo Coded Signaling over a Rayleigh Fading Channel (Memory Channel) has now been published on this website. The T1 Professional (T1 V2) system tool now supports Turbo Coded Signaling and Turbo Decoding for the Burst Channel (Classic Bursty with Background Noise & Gilbert-Elliot Burst); Fading Channel (Rayleigh, Rician, & Frequency-Selective); and InterSymbol Interference (ISI) Channel (with Linear Equalizer) Memory Channel models.

VIEW these Turbo Decoding of Turbo Coded Signaling over a Rayleigh Fading Channel (Memory Channel) BER results and its analysis and LEARN more about this feature.

New Turbo Decoding Bit Error Rate (BER) results for Rate Matching Punctured Turbo Coded Signaling over a Rayleigh Fading Channel (Memory Channel) has now been published on this website. The T1 Professional (T1 V2) system tool now supports Rate Matching Punctured Turbo Coded Signaling and Turbo Decoding for the Burst Channel (Classic Bursty with Background Noise & Gilbert-Elliot Burst); Fading Channel (Rayleigh, Rician, & Frequency-Selective); and InterSymbol Interference (ISI) Channel (with Linear Equalizer) Memory Channel models.

VIEW these Turbo Decoding of Rate Matching Punctured Turbo Coded Signaling over a Rayleigh Fading Channel (Memory Channel) BER results and its analysis and LEARN more about this feature.

Iterative Message-Passing (Belief Propagation) Decoding Bit Error Rate (BER) results & their important impact on the use of Low-Density Parity-Check (LDPC) Codes for Reliable Digital Communications has now been published on this website. These results pertain to the T1 Professional (T1 V2) use of the Sum-Product Algorithm (SPA) in decoding Gallager, Array, and Repeat-Accumulate Coded Signaling over an Additive White Gaussian Noise Memoryless Channel.

VIEW these Low-Density Parity-Check (LDPC) Code Sum-Product Algorithm (SPA) Decoding BER results and its analysis and LEARN more about this feature.

Turbo Decoding Bit Error Rate (BER) results & their important impact on the use of Turbo Codes for Reliable Digital Communications has now been published on this website. These results pertain to the use of the Cross-Entropy (CE) Iterative Stopping Rule (SR) in a Turbo Decoder. The T1 Professional (T1 V2) system tool now contains a CE SR feature in the Turbo Decoder model along with the Fixed Number SR.

VIEW these Turbo Decoding & Cross-Entropy Stopping Rule BER results and its analysis and LEARN more about this feature.

Today, many possible powerful and complex Digital Communication (Information-theoretic) systems could be designed and built in an attempt to satisfy a set of System Requirements for a Target (field) design. The physical study, analysis, design, and/or evaluation of such a Real World system with all of its possible channel impairments (corruption) in the laboratory or field is nearly impossible using the scientific approach.

Consider the following points:

1) this prototyping hardware effort (building & testing a laboratory mock-up) would be a very expensive and time consuming endeavor because of the total number of possible system models (apparatus) that might need to be considered;

2) the creation/duplication of possible physical channel impairments such as AWGN (Additive White Gaussian Noise), Fading, ISI (InterSymbol Interference), etc. that would occur in the field operation of a particular system model is an extremely difficult task; and

3) the knowledge and technical skills required to actually build such a hardware prototype in a laboratory is only found in a few universities, corporations or institutions in the world.

These are some of the reasons why engineers, scientists, and mathematicians build computer models (software-based) of these systems and simulate (computer-based) their performance of these systems to study, analyze, design, and/or evaluate Coding methods to reduce the Error Rate of Information transfer of these systems.

Buy and Use the novel PC Computer-Based Advanced Digital Communication System Modeler (AdvDCSM) software system tool product: AdvDCSM DCSS (Digital Communication System Simulator) T1.

And Use T1's easy-to-use Bit Error Rate (BER)/Bit Error Probability (Pb) Plot Generation Feature to produce BER Plots of your Pb performance simulation results.

VIEW a BER Plot Generation Example and LEARN more about this feature.

T1 is available Worldwide via software DOWNLOADS (Electronic Distribution) to Customers in USA, CANADA, and OTHER SELECTED COUNTRIES.

LEARN additional REASONS to BUY & USE AdvDCSM DCSS (T1).