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Progressive Pattern Interleaver with Multi-Carrier Modulation Schemes and Iterative Multi-User Detection in IoT 6G
Shivani Dixit1, Varun Shukla2, Manoj Kumar Misra3
1Department of Electronics & Communication, Pranveer Singh Institute of Technology, Kanpur 208001, India.
Sensors (Basel, Switzerland)
|June 19, 2024
Summary
A novel progressive pattern interleaver (PPI) enhances non-orthogonal multiple access (NOMA) in 6G wireless networks. This efficient interleaving improves performance in multipath fading, outperforming random interleavers.
Area of Science:
- Wireless Communications
- Signal Processing
- Information Theory
Background:
- Sixth-generation (6G) wireless networks require advanced multiple access schemes to handle increasing user demands and severe channel conditions.
- Non-orthogonal multiple access (NOMA) is a key technology for 6G, enabling enhanced spectral efficiency and network capacity by allowing users to share resources.
- Interleaved Division Multiple Access (IDMA) is a NOMA scheme proposed by 3GPP, utilizing orthogonal interleavers for user separation.
Purpose of the Study:
- To evaluate the performance of a novel progressive pattern interleaver (PPI) within IDMA schemes for 6G networks.
- To compare the effectiveness of PPI when integrated with Single-Carrier Frequency-Division Multiple Access (SC-FDMA) and Orthogonal Frequency-Division Multiplexing (OFDM) modulation.
- To assess the suitability of the SC-FDMA-IDMA and OFDM-IDMA schemes employing PPI in severe multipath fading environments.
Main Methods:
- Simulated the performance of SC-FDMA-IDMA and OFDM-IDMA schemes incorporating the progressive pattern interleaver (PPI).
- Evaluated the schemes under multipath channel conditions, focusing on bit error rate (BER) as a key performance metric.
- Compared the PPI with the conventional random interleaver (RI) in terms of bandwidth requirements and implementation complexity.
Main Results:
- The progressive pattern interleaver (PPI) demonstrated adequate performance in terms of bit error rate (BER) for both SC-FDMA-IDMA and OFDM-IDMA schemes under multipath fading.
- Simulation outcomes indicate that PPI is a viable solution for user discrimination in IDMA-based NOMA systems.
- PPI exhibited superior characteristics compared to the conventional random interleaver (RI) regarding bandwidth efficiency and structural complexity.
Conclusions:
- The novel progressive pattern interleaver (PPI) is an effective component for enhancing NOMA performance in 6G wireless systems, particularly in challenging multipath environments.
- The SC-FDMA-IDMA and OFDM-IDMA schemes, when utilizing PPI, offer a promising approach for efficient multi-user communication.
- PPI presents a more efficient and less complex alternative to random interleavers for IDMA-based NOMA, contributing to the advancement of 6G network capabilities.
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