Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions
The user experience of practical indoor power line communication (PLC) applications is greatly affected by the system quality-of-service (QoS) criteria. With a general broadcast-and-multi-access (BMA) relay scheme, in this work we investigate the joint source and relay power optimization of the ampl...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
KSII-KOR SOC INTERNET INFORMATION
2017
|
| Online Access: | http://itiis.org/digital-library/manuscript/1818 http://hdl.handle.net/20.500.11937/59422 |
| _version_ | 1848760475795324928 |
|---|---|
| author | Wu, X. Zhu, B. Wang, Y. Rong, Yue |
| author_facet | Wu, X. Zhu, B. Wang, Y. Rong, Yue |
| author_sort | Wu, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The user experience of practical indoor power line communication (PLC) applications is greatly affected by the system quality-of-service (QoS) criteria. With a general broadcast-and-multi-access (BMA) relay scheme, in this work we investigate the joint source and relay power optimization of the amplify-and-forward (AF) relay systems used under indoor broadband PLC environments. To achieve both time diversity and spatial diversity from the relay-involved PLC channel, which is time-varying in nature, the source node has been configured to transmit an identical message twice in the first and second signalling phase, respectively. The QoS constrained power allocation problem is not convex, which makes the global optimal solution is computationally intractable. To solve this problem, an alternating optimization (AO) method has been adopted and decomposes this problem into three convex/quasi-convex sub-problems. Simulation results show the fast convergence and short delay of the proposed algorithm under realistic relay-involved PLC channels. Compared with the two-hop and broadcast-and- forward (BF) relay systems, the proposed general relay system meets the same QoS requirement with less network power assumption. |
| first_indexed | 2025-11-14T10:16:22Z |
| format | Journal Article |
| id | curtin-20.500.11937-59422 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:16:22Z |
| publishDate | 2017 |
| publisher | KSII-KOR SOC INTERNET INFORMATION |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-594222018-03-02T03:44:44Z Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions Wu, X. Zhu, B. Wang, Y. Rong, Yue The user experience of practical indoor power line communication (PLC) applications is greatly affected by the system quality-of-service (QoS) criteria. With a general broadcast-and-multi-access (BMA) relay scheme, in this work we investigate the joint source and relay power optimization of the amplify-and-forward (AF) relay systems used under indoor broadband PLC environments. To achieve both time diversity and spatial diversity from the relay-involved PLC channel, which is time-varying in nature, the source node has been configured to transmit an identical message twice in the first and second signalling phase, respectively. The QoS constrained power allocation problem is not convex, which makes the global optimal solution is computationally intractable. To solve this problem, an alternating optimization (AO) method has been adopted and decomposes this problem into three convex/quasi-convex sub-problems. Simulation results show the fast convergence and short delay of the proposed algorithm under realistic relay-involved PLC channels. Compared with the two-hop and broadcast-and- forward (BF) relay systems, the proposed general relay system meets the same QoS requirement with less network power assumption. 2017 Journal Article http://hdl.handle.net/20.500.11937/59422 10.3837/tiis.2017.10.010 http://itiis.org/digital-library/manuscript/1818 KSII-KOR SOC INTERNET INFORMATION restricted |
| spellingShingle | Wu, X. Zhu, B. Wang, Y. Rong, Yue Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title | Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title_full | Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title_fullStr | Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title_full_unstemmed | Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title_short | Optimization for relay-assisted broadband power line communication systems with QoS requirements under time-varying channel conditions |
| title_sort | optimization for relay-assisted broadband power line communication systems with qos requirements under time-varying channel conditions |
| url | http://itiis.org/digital-library/manuscript/1818 http://hdl.handle.net/20.500.11937/59422 |