Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design
In exploiting large propagation delays in underwater acoustic (UWA) networks, the time-domain interference alignment (TDIA) mechanism aligns interference signals through delay-aware slot scheduling, creating additional idle time for improved transmission at the medium access control (MAC) layer. How...
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MDPI AG
2024-12-01
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| Online Access: | https://www.mdpi.com/1424-8220/25/1/68 |
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| author | Qiao Xiao Zhicheng Bi Chaofeng Wang |
| author_facet | Qiao Xiao Zhicheng Bi Chaofeng Wang |
| author_sort | Qiao Xiao |
| collection | DOAJ |
| description | In exploiting large propagation delays in underwater acoustic (UWA) networks, the time-domain interference alignment (TDIA) mechanism aligns interference signals through delay-aware slot scheduling, creating additional idle time for improved transmission at the medium access control (MAC) layer. However, perfect alignment remains challenging due to arbitrary delays. This study enhances TDIA by incorporating power allocation into its transmission scheduling framework across the physical and MAC layers, following the cross-layer design principle. The proposed quasi-interference alignment (QIA) mechanism enables controlled interference on useful signals by jointly optimizing the transmission schedule and power. The formulated optimization problem to maximize network throughput is divided into two sub-problems: one for coarse slot scheduling and another for refining both scheduling and power allocation. The simulation results validate the QIA framework’s superiority over the traditional TDIA and genetic algorithm benchmarks. |
| format | Article |
| id | doaj-art-a2dd311e1c224d318ed644f1f6935716 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-a2dd311e1c224d318ed644f1f69357162025-01-10T13:20:46ZengMDPI AGSensors1424-82202024-12-012516810.3390/s25010068Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer DesignQiao Xiao0Zhicheng Bi1Chaofeng Wang2School of Computer Science, University of South China, Hengyang 421001, ChinaSchool of Electrical Engineering, University of South China, Hengyang 421001, ChinaSchool of Computer Science, University of South China, Hengyang 421001, ChinaIn exploiting large propagation delays in underwater acoustic (UWA) networks, the time-domain interference alignment (TDIA) mechanism aligns interference signals through delay-aware slot scheduling, creating additional idle time for improved transmission at the medium access control (MAC) layer. However, perfect alignment remains challenging due to arbitrary delays. This study enhances TDIA by incorporating power allocation into its transmission scheduling framework across the physical and MAC layers, following the cross-layer design principle. The proposed quasi-interference alignment (QIA) mechanism enables controlled interference on useful signals by jointly optimizing the transmission schedule and power. The formulated optimization problem to maximize network throughput is divided into two sub-problems: one for coarse slot scheduling and another for refining both scheduling and power allocation. The simulation results validate the QIA framework’s superiority over the traditional TDIA and genetic algorithm benchmarks.https://www.mdpi.com/1424-8220/25/1/68underwateracoustic networkstransmission schedulingpower allocationtime-domain interference alignmentcross-layer design |
| spellingShingle | Qiao Xiao Zhicheng Bi Chaofeng Wang Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design Sensors underwateracoustic networks transmission scheduling power allocation time-domain interference alignment cross-layer design |
| title | Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design |
| title_full | Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design |
| title_fullStr | Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design |
| title_full_unstemmed | Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design |
| title_short | Enhancing Time-Domain Interference Alignment for Underwater Acoustic Networks with Cross-Layer Design |
| title_sort | enhancing time domain interference alignment for underwater acoustic networks with cross layer design |
| topic | underwateracoustic networks transmission scheduling power allocation time-domain interference alignment cross-layer design |
| url | https://www.mdpi.com/1424-8220/25/1/68 |
| work_keys_str_mv | AT qiaoxiao enhancingtimedomaininterferencealignmentforunderwateracousticnetworkswithcrosslayerdesign AT zhichengbi enhancingtimedomaininterferencealignmentforunderwateracousticnetworkswithcrosslayerdesign AT chaofengwang enhancingtimedomaininterferencealignmentforunderwateracousticnetworkswithcrosslayerdesign |