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| Content Provider | IET Digital Library |
|---|---|
| Author | Bai, Xiaojuan |
| Abstract | A space-alignment (SA) scheme with K primary users in different cells working in the same frequency band based on K-symbol extension for cognitive transmission in a multiple-input multiple-output system is proposed. The main idea is that the secondary transmitter sends a supersymbol over the K timeslot; meanwhile, the secondary transmitter aligns its transmit directions by precoding to the kth primary channel eigenmodes unused at the kth timeslot, and at the same time adapts its transmit power to satisfy the interference-power constraints at the other K −1 primary receivers. The simulation results show that the proposed scheme achieves a higher performance compared with both the SA scheme with the single primary user and the scheme of the direct singular value decomposition of the secondary channel with interference-power constraint. |
| Starting Page | 1619 |
| Ending Page | 1620 |
| Page Count | 2 |
| ISSN | 00135194 |
| Volume Number | 49 |
| e-ISSN | 1350911X |
| Issue Number | Issue 25, Dec (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/49/25 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2013.2524 |
| Journal | Electronics Letters |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Algebra Cognitive Radio Cognitive Transmission Direct Singular Value Decomposition Eigen Values And Eigen Function Electromagnetic Compatibility Frequency-band Interference Interference-power Constraint K-symbol Extension Kth Primary Channel EigenMode Kth Timeslot MIMO Communication Multiple Primary User Multiple-input Multiple-output System Radio Frequency Interference Radio Link And Equipment Radio Transmitters SA Scheme Secondary Transmitter Singular Value Decomposition Space-alignment Scheme Supersymbol |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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