Efficient implementation of the implicit error correction nVoD schema

Asorey-Cacheda, Rafael; Pedrero-López, Belén; González-Castaño, Francisco J.

doi:10.1007/s11042-011-0966-z

Cited by 1 publication

(19 citation statements)

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“…The basic IEC schema was introduced in [19], and is based on Harmonic Broadcasting (HB) algorithms [33]- [35]. The implementation architecture of IEC was presented in [4] and an advanced IEC schema, incorporating Feedback Error Correction, was described in [5]. For the sake of clarity, this section summarizes the main properties and features of the IEC schema.…”

Section: The Iec Nvod Schemementioning

confidence: 99%

“…In connection to this situation, the study and development of robust techniques for reliable content distribution have become necessary. This paper presents an extended architecture of the Implicit Error Correction (IEC) nVoD scheme that considerably improves the original proposal in [4] and [5] by significantly increasing client decoding efficiency. Specifically, we have included subchannels to the system architecture.…”

Section: Introductionmentioning

confidence: 99%

“…This paper is based on previous works [4] and [5]. The work in [4] introduced the basic IEC scheme and analyzed its performance in terms of packet loss recovery.…”

Section: Introductionmentioning

confidence: 99%

“…The work in [4] introduced the basic IEC scheme and analyzed its performance in terms of packet loss recovery. The work in [5] showed an implementation architecture of IEC and extended the original IEC mechanism by introducing a new technique, denoted Feedback Error Correction, which increases the packet loss recovery capabilities.…”

Section: Introductionmentioning

confidence: 99%

“…The advantages of using subchannels are at the cost of increased encoding and decoding complexity. However, as the original IEC nVoD computational complexity was very small [5] and the number of subchannels required to achieve good performance is also low, this complexity is constrained and should not be considered as a limiting factor.…”

Section: Introductionmentioning

confidence: 99%

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An Efficient NVoD Scheme Using Implicit Error Correction and Subchannels for Wireless Networks

Asorey-Cacheda

García-Sánchez

2020

IEEE Trans. Multimedia

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Implicit Error Correction (IEC) is a near Video-on-Demand (nVoD) scheme that trades bandwidth utilization for initial playback delay to potentially support an infinite number of users. Additionally, it provides error protection without any further bandwidth increase by exploiting the implicit redundancy of nVoD protocols, using linear combinations of the segments transmitted in a given time slot. However, IEC packet loss protection is weaker at the beginning of the playback due to the lack of implicit redundancy and lower decoding efficiency, resulting in worse subjective playback quality. In tackling this issue, this paper contributes with an extension of the original nVoD architecture, enhancing its performance by adding a new element namely, subchannels. These subdivisions of the original channels do not provide further packet loss protection but significantly improve the decoding efficiency, which in turn increases playback quality, especially at the beginning. Even for very high packet loss probabilities, subchannels are designed to obtain higher decoding efficiency which results in greater packet loss protection than that provided by IEC. The proposed scheme is especially useful in wireless cooperative networks using techniques such as network coding, as content transmissions can be split into different subchannels in order to maximize network efficiency.

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Section: The Iec Nvod Schemementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…This paper is based on previous works [4] and [5]. The work in [4] introduced the basic IEC scheme and analyzed its performance in terms of packet loss recovery.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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