Performance Analysis of LDPC Codes on Different Channels

Ghauri, Sajjad A.; Haq, Muhammad Ehsan ul; Iqbal, M. Kaleem; Rehman, Muhammad Javvad ur

doi:10.1109/ngmast.2014.34

Cited by 4 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LDPC codes are effectively applied in radio and TV broadcasting and wireless communications applications because of their performance analysis, which has been analyzed, evaluated, and discussed in [87,88]. Also, in [89], the performance of LDPC codes is evaluated on the AWGN channel,Rayleigh fading channel, and Rician fading channel, and they have an error correction representation, particularly in DVB-T2/S2.They are now one of the vital success codes of the DVB-S2 standard [90,91], DVB-T2 standard [92,93], and the advanced television systems committee 3.0 (ATSC 3.0) [94]. A low-density generator matrix G characterizes these codes, that is, a binary generator matrix containing a high number of zeros and, therefore, a low number of ones.…”

Section: Inner Coding: Low-density Parity-check (Ldpc) Codesmentioning

confidence: 99%

A Survey on Error–Correcting Codes for Digital Video Broadcasting

2021

View full text Add to dashboard Cite

We expose a complete survey of error-correcting codes (ECC) for digital video broadcasting (DVB) to support information protection. This survey discusses the specific application of the adaptive ECC feature for terrestrial/satellite/handheld and cable of the first, second, and third generations. We provide and review an ECC technique overview on DVB standard with their technical transmission specifications. The critical contribution of this paper is to clarify the differences among different ECC technologies using in the three generations of DVB. The survey also provides future directions for the technology trend of ECC for DVB.

show abstract

Section: Inner Coding: Low-density Parity-check (Ldpc) Codesmentioning

confidence: 99%

A Survey on Error–Correcting Codes for Digital Video Broadcasting

2021

View full text Add to dashboard Cite

show abstract

“…LDPC codes is chosen because it has a better performance than Turbo codes which is known to have a performance close to Shannon limit [8]. LDPC is also widely used for high-throughput and real-time communications [8]. LDPC also has a good ability on moderate (∼400) and large block size (∼6144) [9].…”

Section: Introductionmentioning

confidence: 99%

Channel Coding for Multimedia Transmission on High-Speed Flying Devices

Aulia¹,

Anwar²,

Andini³

2021

International Journal on Advanced Science, Engineering and Information Technology

View full text Add to dashboard Cite

Communication systems for high-speed flying devices, such as drones and missiles, have performances with error-floor caused by the Doppler effect, which causes inter-carrier interference (ICI) and destroys real-time data transmission. Channel coding cannot reduce error-floors, but channel coding may still achieve performance with turbo-cliff. This paper proposes a broadband communication system for high-speed flying devices using soft 4 quadrature amplitude modulation (4-QAM) modulations with the optimal threshold S for practical implementation assuming that the maximum/minimum log-likelihood ratio (LLR) values of ±709. We use orthogonal frequency division multiplexing (OFDM) with low-density parity-check (LDPC) codes as the channel coding scheme and minimum mean squared error (MMSE) equalization. To reduce the computational complexity and to keep the data rate high, we use only a single pilot for the channel estimation. Computer-based simulations for several high speeds are performed to evaluate the performance of the proposed high-speed flying devices system. The bit error rate (BER) performance is evaluated based on LLR under additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels. The results confirmed that the proposed system with the optimal threshold S can avoid unstable jumping error with better turbo-cliff and lower error-floor. The maximum speed the system can achieve for BER of 10 −2 is 400 km/h. The results of this paper are expected to contribute significantly to the development of communication systems on flying devices.

show abstract

“…Despite these reliable channel estimation techniques proposed in literature, Forward Error Correction (FEC) schemes such Turbo codes and Low Density Parity Check (LDPC) codes are combined with these channel estimation techniques to improve the performance of OFDM systems over frequency-selective Rician fading channels. In [10][11][12][13][14] Figure 1: OFDM-RS system model set-up…”

Section: Introductionmentioning

confidence: 99%

On the Analysis of Reed-Solomon Codes for OFDM Systems over Rician Fading Channels

2017

View full text Add to dashboard Cite

The relative strength between the direct and the scattered paths of the received signal in wireless communication as described by the Rician factor K specifies the quality of the transmission link. Fading in Rician channel models influence the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems. Accordingly, channel estimation together with different Forward Error Correction (FEC) schemes are used to provide significant performance gain for OFDM systems over fading channels. In most literature, the performance of FEC schemes such as Turbo and LDPC codes have been analysed for OFDM systems over frequency-selective Rician fading channels. This paper evaluates the performance of Reed-Solomon (RS) codes over frequency-selective Rician fading channels. The performance of RS codes is firstly studied for different Rician K factors and Doppler frequencies. Secondly, the performance of RS codes is reviewed assuming different code rates k n for both hard-decision and soft-decision decoding algorithms. The Euclidean algorithm (EA) is used as the RS hard-decision decoding algorithm while the Parity-check Transformation Algorithm (PTA) is deployed as the RS soft-decision decoding algorithm. The results for the various channel and coding conditions are documented through computer simulations. The simulation results validate the importance of a high Rician K factor. Interestingly, the simulation results verify that adopting a low-rate code do not necessarily improve the error rate irrespective of the Rician K factor. This analysis is relevant in order to establish the performance of combined RS codes with OFDM systems over frequency-selective Rician fading channels.

show abstract

Performance Analysis of LDPC Codes on Different Channels

Cited by 4 publications

References 18 publications

A Survey on Error–Correcting Codes for Digital Video Broadcasting

A Survey on Error–Correcting Codes for Digital Video Broadcasting

Channel Coding for Multimedia Transmission on High-Speed Flying Devices

On the Analysis of Reed-Solomon Codes for OFDM Systems over Rician Fading Channels

Contact Info

Product

Resources

About