Wireless Scalable Video Coding Using a Hybrid Digital-Analog Scheme

Yu, Lei; Li, Houqiang; Li, Weiping

doi:10.1109/tcsvt.2013.2273675

Cited by 96 publications

(47 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previously, HDA coding of correlated sources have appeared in [2,[9][10][11][12][16][17][18]. With the exception of [18], none of these work uses the AMMSE as a criterion for power allocation.…”

Section: Main Contribution and Related Previous Workmentioning

confidence: 99%

“…Phamdo and Mittal [2] present an implementation of an HDA system for lowbit-rate speech transmission based on the standard FS 1016 CELP codec, by using two independent channels with identical CSNRs for digital and analog transmissions (hence identical power allocations). Yu et al [9] present similar HDA scheme for video transmission based on H.264/AVC codec but use channel superposition of analog and digital components the power allocation between which is determined by assuming a worst-case CSNR. In [10][11][12], channel optimized vector quantizers (COVQ) are used as the digital encoder whose quantization error is transmitted in analog form.…”

Section: Main Contribution and Related Previous Workmentioning

confidence: 99%

“…The maximum possible rate achievable at an outage CSNR of θ o is given by (4). From (9), it follows that the MMSE of the HDA-VQ system at a CSNR of θ is…”

Section: Hda Vector Quantization (Hda-vq) Lower Boundmentioning

confidence: 99%

“…Fundamentally, HDA transmission involves the simultaneous transmission of a source in both digital and analog forms. Most previous work on HDA coding have used a form of layered transmission in which the base layer is digitally coded, and the quantization error of the base layer is transmitted as a refinement layer, using analog pulse amplitude (PAM) modulation [2,[9][10][11][12]. While a considerable amount of research has focused on HDA transmission of memoryless sources, much less work has been devoted to developing good HDA codes for sources with memory.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hybrid digital-analog coding with bandwidth expansion for correlated Gaussian sources under Rayleigh fading

Yahampath

2017

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

Consider communicating a correlated Gaussian source over a Rayleigh fading channel with no knowledge of the channel signal-to-noise ratio (CSNR) at the transmitter. In this case, a digital system cannot be optimal for a range of CSNRs. Analog transmission however is optimal at all CSNRs, if the source and channel are memoryless and bandwidth matched. This paper presents new hybrid digital-analog (HDA) systems for sources with memory and channels with bandwidth expansion, which outperform both digital-only and analog-only systems over a wide range of CSNRs. The digital part is either a predictive quantizer or a transform code, used to achieve a coding gain. Analog part uses linear encoding to transmit the quantization error which improves the performance under CSNR variations. The hybrid encoder is optimized to achieve the minimum AMMSE (average minimum mean square error) over the CSNR distribution. To this end, analytical expressions are derived for the AMMSE of asymptotically optimal systems. It is shown that the outage CSNR of the channel code and the analog-digital power allocation must be jointly optimized to achieve the minimum AMMSE. In the case of HDA predictive quantization, a simple algorithm is presented to solve the optimization problem. Experimental results are presented for both Gauss-Markov sources and speech signals.

show abstract

Section: Main Contribution and Related Previous Workmentioning

confidence: 99%

Section: Main Contribution and Related Previous Workmentioning

confidence: 99%

“…The maximum possible rate achievable at an outage CSNR of θ o is given by (4). From (9), it follows that the MMSE of the HDA-VQ system at a CSNR of θ is…”

Section: Hda Vector Quantization (Hda-vq) Lower Boundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hybrid digital-analog coding with bandwidth expansion for correlated Gaussian sources under Rayleigh fading

Yahampath

2017

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

show abstract

“…The hybrid swarm algorithm is memory based its take more iteration time and increases the complexity of process. The hybrid swarm intelligence algorithm used with the combination of partition techniques of video [8][9][10][11][12][13]. For the partition of blocks used isosceles triangular partition techniques.…”

Section: Introductionmentioning

confidence: 99%

Video Compression based on Fractal Isosceles Triangular Partition using Hybrid Swarm Intelligence

Pandit¹,

Shukla²,

Tiwari³

2018

IJCA

View full text Add to dashboard Cite

Symmetry property of fractal transforms enriched the compression techniques of digital multi-media data. The major part of multi-media data is video and image. The diverse nature of video required more memory and bandwidth for storage and transmission. For the efficient processing of video needs compression. Isosceles triangular partition (ITP) techniques provide the symmetry of range block and domain blocks in terms of triangular shape not in a rectangle. The triangular shape reduces the process of non-overlapping of blocks and increases quality of video compression in terms of PSNR. Instead of quality improvement of video suffered from the process of compression ratio and process of encoding time of video. The bottleneck problem of isosceles triangular partition is search space and mapping of blocks. For the betterment of search space and mapping of blocks used hybrid swarm intelligence. The hybrid swarm intelligence reduces the search space and increases the efficiency of mapping and increases the compression ratio of video compression. The design algorithms simulated in MATLAB software and used some short duration of video clip and measure some standard parameters such as PSNR, encoding time, compression ratio and MSE. The design algorithm gives better results instead of isosceles triangular partition.

show abstract

User-Cognizant Scalable Video Transmission over Heterogeneous Cellular Networks

Zhang

2017

Handbook of Cognitive Radio

View full text Add to dashboard Cite

Wireless Scalable Video Coding Using a Hybrid Digital-Analog Scheme

Cited by 96 publications

References 35 publications

Hybrid digital-analog coding with bandwidth expansion for correlated Gaussian sources under Rayleigh fading

Hybrid digital-analog coding with bandwidth expansion for correlated Gaussian sources under Rayleigh fading

Video Compression based on Fractal Isosceles Triangular Partition using Hybrid Swarm Intelligence

User-Cognizant Scalable Video Transmission over Heterogeneous Cellular Networks

Contact Info

Product

Resources

About