Technical Solutions for Local Service Insertion in DVB-NGH Single Frequency Networks

López-Sánchez, J.; Zöllner, Jan; Atungsiri, S.A.; Stare, Erik; Gómez-Barquero, David

doi:10.1109/tbc.2014.2322502

“…Although the figure shows a specific LSA overlapping with two other LSAs, all K LSAs can overlap with each other in general. For the local content, O-LSI [13] allots mutually orthogonal sets of sub-carriers to the LSAs. Conversely, for the global content, the sub-carrier set for GSA will be shared throughout all LSAs.…”

Section: System Modelmentioning

confidence: 99%

“…The orthogonal local content insertion (O-LSI) scheme [13] implements frequency reuse for the local contents with subbands of the orthogonal frequency division multiple access (OFDMA) spectrum. Both the global and local contents can have equal coverage in this scheme.…”

Section: Introductionmentioning

confidence: 99%

A Novel Spectrally Efficient Local Service Insertion Scheme With Universal Frequency Reuse

V¹,

Kim²

2022

Preprint

0

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<p>Local content insertion enabled single frequency networks (SFN) for TV broadcast is a topic of considerable research interest. The SFN broadcast system is not ideally suited for localized content, but it offers enormous spatial diversity and power gain advantages. Orthogonal Frequency Division Multiple Access (OFDMA) allows reserving a fraction of available subcarriers for broadcasting local content. However, a user in the transition region from one local service area (LSA) to another experiences high co-channel interference (CCI). This work explores the possibility of using a `buffer zone' based on universal frequency reuse schemes. In such systems, the power allocation to each content is varied to reduce the CCI-dominated region in the LSA boundary. Simulation results show that depending on the threshold signal-to-interference plus noise (SINR) ratio selected, the proposed buffer architectures increase the percentage of users served by the SFN compared to the scheme where such a buffer is absent. Moreover, the proposed method is spectrally efficient compared to an orthogonal allocation of local content across the LSAs.</p>

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“…The DVB-NGH standards [12] recommend a local content insertion strategy known as hierarchical local service insertion (H-LSI) [13]. It employs hierarchical modulation [14], a technique where a low priority (LP) bit stream is combined with a high priority (HP) bit stream by imposing a secondary constellation on top of the basic primary constellation [15].…”

Section: Introductionmentioning

confidence: 99%

Interference-Managed Local Service Insertion for 5G Broadcast

V¹,

Kim²

2023

Preprint

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<p>Local content insertion enabled single frequency networks (SFN) for TV broadcast is a topic of considerable research interest. The SFN broadcast system is not ideally suited for localized content, but it offers enormous spatial diversity and power gain advantages. Orthogonal Frequency Division Multiple Access (OFDMA) allows reserving a fraction of available subcarriers for broadcasting local content. However, a user in the transition region from one local service area (LSA) to another experiences high co-channel interference (CCI). This work explores the possibility of using a `buffer zone' based on universal frequency reuse schemes. In such systems, the power allocation to each content is varied to reduce the CCI-dominated region in the LSA boundary. Simulation results show that depending on the threshold signal-to-interference plus noise (SINR) ratio selected, the proposed buffer architectures increase the percentage of users served by the SFN compared to the scheme where such a buffer is absent. Moreover, the proposed method is spectrally efficient compared to an orthogonal allocation of local content across the LSAs.</p>

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“…In streaming service data, DVB-NGH uses RoHC (Robust Header Compression) method to reduce the overhead due to IP encapsulation, additional satellite component for increased coverage area, improved signaling robustness [5]. DVB-NGH allows efficient transmission of local services within enhanced Single-Frequency Network (eSFN) [11]. DVB-NGH improves SFN planning flexibility in the 4K mode [12].…”

Section: Introductionmentioning

confidence: 99%

Capacity Improvement for DVB-NGH with Dual-Polarized MIMO Spatial Multiplexing and Hybrid Beamforming

Nguyen

¹

,

Le

²

,

Nguyen

³

2020

International Journal of Digital Multimedia Broadcasting

3

0

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Multiple-input multiple-output (MIMO) antenna scheme is an effective technique for future terrestrial broadcasting systems such as digital video broadcasting-next-generation handheld (DVB-NGH) to overcome the limits on information theory of traditional single-antenna wireless communications without any additional bandwidth or increased transmit power. In this paper, we propose a hybrid beamforming scheme for dual-polarized MIMO spatial multiplexing DVB-NGH broadcasting systems. The system of interest makes use of phase shifters and amplitude attenuators for the digital-analog precoder at beamforming stage of the transmitter end to maximize the signal-to-noise ratio to increase the channel capacity of the DVB-NGH systems. At the receiver end, the maximum likelihood (ML) detector is used to evaluate the system performance. We consider the signal-to-interference-and-noise ratio (SINR) and the achievable average capacity for the DVB-NGH MIMO with various FFT sizes, number of transmit antennas, and different modulation schemes. The performance results on bit error rate, channel capacity, and beampatterns show that the proposed hybrid beamforming and dual-polarized MIMO spatial multiplexing schemes provide more robustness against signal interference by beamforming and/or nulling techniques. The simulation results also show that the proposed system achieves higher capacity than the existing MIMO schemes for the DVB-NGH systems.

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Technical Solutions for Local Service Insertion in DVB-NGH Single Frequency Networks

Cited by 16 publications

References 10 publications

A Novel Spectrally Efficient Local Service Insertion Scheme With Universal Frequency Reuse

A Novel Spectrally Efficient Local Service Insertion Scheme With Universal Frequency Reuse

Interference-Managed Local Service Insertion for 5G Broadcast

Capacity Improvement for DVB-NGH with Dual-Polarized MIMO Spatial Multiplexing and Hybrid Beamforming

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