Enhanced LDM for Next-Generation Digital Broadcasting Transmission
Abstract
:1. Introduction
2. Overview of the Traditional LDM Scheme
3. Proposed En-LDM Scheme
3.1. System Model
3.1.1. En-LDM Transmitter
3.1.2. En-LDM Receiver
3.2. Channel Capacity Analysis
3.2.1. Analysis for LDM
3.2.2. Analysis for En-LDM
3.2.3. BICM Capacity Analysis
4. Compute and Simulation Results
4.1. Spectral Efficiency Calculation
4.2. Simulation Results
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Scheme | Transmitter | Receiver | Achieved Capacity | Complexity |
---|---|---|---|---|
LDM | LDM | SIC | low | low |
LTDM [22] | LDM, TDM | SIC | medium | medium |
En-LDM | LDM, FDM, Punctured LDPC | SIC | high | high |
Parameter | Value |
---|---|
FFT Size | 16k |
Scattered Pilot pattern | SP8_2 |
Cyclic Prefix (CP) | 1/16 |
CL LDPC Code Length | 16,200 |
CL LDPC Code Rate () | 5/15 |
CL Number of Iterations | 50 |
CL Constellation | QPSK |
EL LDPC Code Length | 16,200 |
EL LDPC Code Rate () | 9/15, 11/15 |
EL Number of Iterations | 50 |
EL Constellation | NU−64QAM |
Puncturing Rate (PR, ) | 1/13 |
Injection Level () | 10 dB, 12 dB, 15 dB |
Echo | Power (dB) | Time Delay (μs) |
---|---|---|
1 | −3 | 0 |
2 | 0 | 0.2 |
3 | −2 | 0.5 |
4 | −6 | 1.6 |
5 | −8 | 2.3 |
6 | −10 | 5.0 |
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Deng, X.; Bian, X.; Li, M. Enhanced LDM for Next-Generation Digital Broadcasting Transmission. Sensors 2021, 21, 1716. https://doi.org/10.3390/s21051716
Deng X, Bian X, Li M. Enhanced LDM for Next-Generation Digital Broadcasting Transmission. Sensors. 2021; 21(5):1716. https://doi.org/10.3390/s21051716
Chicago/Turabian StyleDeng, Xianzheng, Xin Bian, and Mingqi Li. 2021. "Enhanced LDM for Next-Generation Digital Broadcasting Transmission" Sensors 21, no. 5: 1716. https://doi.org/10.3390/s21051716
APA StyleDeng, X., Bian, X., & Li, M. (2021). Enhanced LDM for Next-Generation Digital Broadcasting Transmission. Sensors, 21(5), 1716. https://doi.org/10.3390/s21051716