Performance of a Two Level Unequal Error Protection Scheme for MP3 Transmission over LTE

Ragpot, Prateema; Pawan, Tulsi; Sunjiv, K

doi:10.5120/cae2017652575

Cited by 3 publications

(7 citation statements)

References 9 publications

(11 reference statements)

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“…Bit positions 1 and 2 are favored for the systematic bits. The parity bits are placed on bit positions 3 to 6 as detailed in 17 . For 256-QAM, the first and second-bit positions are the most secured ones.…”

Section: Prioritized Qam Constellationmentioning

confidence: 99%

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Enhanced voice over 5G transmission with unequal error protection and generative adversarial networks

Ragpot,

Fowdur,

Soyjaudah

2024

Int J Communication

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SummaryVoice services have progressed significantly since the launch of mobile phones and have evolved from analog technology to digital ones. Since the launch of 5G, voice over 5G (Vo5G) will slowly take over legacy mobile technologies to provide better voice services. Nevertheless, interruptions and noise will continue to affect speech communication over wireless networks, ensuing in a reduced Quality of Service (QoS). Three enhanced transmission schemes for Vo5G are proposed. The first proposal benefits from the difference in weight of the bits of internet Low Bitrate Code (iLBC) coded packets to offer them diverse degrees of protection i.e. Unequal Error Protection (UEP). UEP enhances the reception quality by allowing the more significant bits to be decoded with greater reliability during 5G transmission. The second and third schemes substitute the usual Quadrature Amplitude Modulation (QAM) constellation with a Statistical QAM (SQAM) one. The second scheme arranges the significant bits on the SQAM constellation and the remaining bits onto the conventional QAM arrangement. For the third scheme, all the bits are arranged on the SQAM constellation. Generative Adversarial Networks (GAN) were incorporated into the third scheme as the third scheme provided better gains over the first and second schemes. GAN was used to synthesize and enhance parts of the speech file that were lost during transmission over the 5G channel resulting in a gain in Segmented Signal to Noise Ratio (SSNR). The addition of GAN boosted the gain obtained by the third scheme by 1.45 dB with 16‐QAM at a code rate of 1/3.

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Section: Prioritized Qam Constellationmentioning

confidence: 99%

“…Bits 5 and 6 are the least secure place. 17 For 256-QAM, each major quadrant can be partitioned into four minor quadrants. Each minor quadrant is like a 64-QAM constellation.…”

Section: Order Of Qam (M)mentioning

confidence: 99%

Enhanced voice over 5G transmission with unequal error protection and generative adversarial networks

Ragpot,

Fowdur,

Soyjaudah

2024

Int J Communication

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“…After that, numerous UEP schemes based on various forward error correction (FEC) codes [20–22] or modulations [23–25] are developed. UEP is most widely applied in the transmission of multimedia data like voices, images and videos [26–28], as they are usually progressive and easier to be prioritized. For example, for H.264 videos, the I‐frame data in a Group of Pictures (GOP) is more important than B/P‐frame data, hence it should be allocated more transmission power or stronger FEC codes to improve the overall quality of the videos at receivers.…”

Section: Introductionmentioning

confidence: 99%

Unequal error protection transmission for federated learning

Zheng

Chen

2022

IET Communications

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Communication has been recognized as one of the primary challenges of federated learning (FL), but the actual communication algorithm or protocol design is still rarely involved in the existing studies. In the paper, viewing the model exchange in FL as a special kind of traffic, an unequal error protection (UEP) scheme is designed based on multi‐rate channel coding and multi‐layer modulation for it. To answer the question of how to make error control for FL when the wireless channel is no longer simplified as a pipeline, this paper firstly theoretically analyzes the impact of transmission error on machine leanring (ML) model, which reveals that the dynamic range of the weights should be taken into consideration. Guided by the analysis, the UEP scheme is applied to FL in multiple perspectives including parameter, network and time. Furthermore, a UEP‐based adaptive coding method is developed for the case with dynamic signal‐to‐noise ratio (SNR) to ensure faster and more stable convergence of the FL model while saving as much bandwidth as possible. Comprehensive numerical simulation on several real‐world datasets verifies that the proposed UEP transmission schemes can indeed bring significant benefits in accuracy, robustness and efficiency, especially when the channel condition is poor.

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“…An enhanced audio transmission scheme with two levels of UEP for MP3 over LTE was presented by Ragpot, Fowdur, and Soyjaudah (2017). For the first level of UEP, the unequal importance of the bits generated by an MP3 codec was exploited, that is they were divided into control information bits and scalefactor and subbands bits.…”

Section: Introductionmentioning

confidence: 99%

“…Results showed that with 16-quadrature amplitude modulation (QAM) at a turbo code rate of 1/2, the proposed two level UEP scheme provided a gain of 22.36 dB in average in SSNR over a conventional EEP one. This paper builds up on the work by Ragpot et al (2017) by investigating a new UEP scheme with prioritized QAM constellations mapping and two other UEP schemes exploiting the statistical distribution of the source symbols to map systematic bits onto QAM constellations. The MP3 compressed audio files are transmitted using both LTE and Wi-Fi systems.…”

Section: Introductionmentioning

confidence: 99%

Enhanced MP3 transmission over Wi-Fi and LTE networks using unequal error protection and varying frequency transforms

Ragpot

Fowdur

Soyjaudah

2019

Journal of Information and Telecommunication

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Wi-Fi and LTE are commonly used for the transmission of high bandwidth data and multimedia over the internet. Providing a good quality of service in the transmission of such data over these wireless channels is challenging due to channel impairments such as noise and fading. This paper proposes three enhanced transmission schemes for audio over Wi-Fi and LTE. The first proposed scheme exploits the unequal importance of the bits generated by an MP3 codec to offer different levels of protection to them during transmission by mapping the important bits on prioritized QAM constellation bit positions. The second and third schemes use the statistical distribution of source symbols to map the bits of the encoded symbols to an SQAM constellation. For the second scheme, only systematic bits from the encoder are mapped onto the SQAM constellation. While for the third scheme, both the systematic and parity bits are mapped onto the SQAM constellation. A comparative analysis with different frequency transforms have been done. The simulation results show that the proposed schemes increase the system performance by 1-20 dB in segmented signal to noise ratio (SSNR). Using DWT further increases the gains up to 90 dB for 16-QAM at rate ½ as compared to FFT.

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Performance of a Two Level Unequal Error Protection Scheme for MP3 Transmission over LTE

Cited by 3 publications

References 9 publications

Enhanced voice over 5G transmission with unequal error protection and generative adversarial networks

Enhanced voice over 5G transmission with unequal error protection and generative adversarial networks

Unequal error protection transmission for federated learning

Enhanced MP3 transmission over Wi-Fi and LTE networks using unequal error protection and varying frequency transforms

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