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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Wei Cao, Zhigang Hanzo, Lajos |
| Abstract | Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a transmitter and hence has prior knowledge of the message intended for the distant receiver. In this contribution, network coded modulation (NCM) is proposed for jointly performing NC and modulation. As in classic coded modulation, the Euclidean distance between the symbols is maximised, hence the symbol error probability is minimised. Specifically, the authors first propose set-partitioning-based NCM as an universal concept which can be combined with arbitrary constellations. Then the authors conceive practical phase-shift keying/quadrature amplitude modulation (PSK/QAM) NCM schemes, referred to as network coded PSK/QAM, based on modulo addition of the normalised phase/amplitude. To achieve a spatial diversity gain at a low complexity, a NC oriented maximum ratio combining scheme is proposed for combining the network coded signal and the original signal of the source. An adaptive NCM is also proposed to maximise the throughput while guaranteeing a target bit error probability (BEP). Both theoretical performance analysis and simulations demonstrate that the proposed NCM can achieve at least 3 dB signal-to-noise ratio gain and two times diversity gain. |
| Starting Page | 988 |
| Ending Page | 998 |
| Page Count | 11 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 10, Jul (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2012.0819 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Adaptive Codes Adaptive NCM Asymmetric Decode-and-forward Two-way Relaying BEP Code Communication Complexity Decode And Forward Communication Diversity Reception Error Statistics Low-complexity Algebraic Operation Maximum Euclidean Distance Network Coded Modulation Minimisation Modulation Coding Modulo Addition NC Oriented Maximum Ratio Combining Scheme Network Coded PSK-QAM Network Coded Signal Network Coding Normalised Amplitude Normalised Phase Optimisation Technique Performance Analysis Phase Shift Keying PSK-QAM NCM Scheme Quadrature Amplitude Modulation Radio Link And Equipment Radio Receiver Radio Transmitters Relay Network Set-partitioning-based NCM Signal-to-noise Ratio Gain Spatial Diversity Gain Statistics Symbol Error Probability Minimisation Telecommunication Telecommunication Traffic Throughput Maximisation Traffic Flow Compression Wireless Receiver Wireless Transmitter Wireless Two-way Relaying Efficiency Improvement |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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