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| Content Provider | IET Digital Library |
|---|---|
| Author | Fa, Rui Zhang, Li |
| Abstract | In uplink orthogonal frequency division multiple access (OFDMA) systems with carrier frequency offsets (CFOs), there always be a dilemma that high performance and low complexity cannot be obtained simultaneously. In this study, in order to achieve better trade-off between performance and complexity, the authors propose a grouped minimum mean squared error (G-MMSE)-based multi-stage interference cancellation (MIC) scheme. The first stage of the proposed scheme is a G-MMSE detector, where the signal is detected group by group using banks of partial MMSE filters. The signal group can be either user based or subcarrier based. Multiple novel interference cancellation (IC) units are serially concatenated with the G-MMSE detector. Reusing the filters in the G-MMSE detector significantly reduces the computational complexity in the subsequent IC units as shown by the complexity analysis. The performance of the proposed G-MMSE-MIC schemes are evaluated by theoretical analysis and simulation. The results show that the proposed schemes outperform other existing schemes with considerably low complexity. |
| Starting Page | 685 |
| Ending Page | 695 |
| Page Count | 11 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 7, May (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/7 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2012.0285 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 3G Mobile Communication Carrier Frequency Offsets CFO Communication Complexity Complexity Analysis Computational Complexity Electromagnetic Compatibility Frequency Division Multiple Access G-MMSE Detector G-MMSE-based MIC Scheme Generalised Grouped Minimum Mean-squared Error-based Multistage Interference Cancellation Scheme Grouped Minimum Mean Squared Error-based Multistage Interference Cancellation Scheme Interference Interference Suppression Interpolation And Function Approximation Least Mean Squares Method Long Term Evolution Mobile Radio System Modulation And Coding Method Multiple Access Communication Multiple Novel IC Units Multiple Novel Interference Cancellation Units Numerical Analysis OFDM Modulation Orthogonal Frequency Division Multiple Access Uplink System Partial MMSE Filter Radio Frequency Interference Radio Link Signal Detection Subcarrier-based Signal Group Trade-off Complexity Uplink OFDMA System User Based Signal Group |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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