IQ失衡補償和VBLAST補償技術應用於 4 × 4多天線輸入多天線輸出60GHz極化多工暨子載波多工暨正交分頻多工光載微波訊號系統

張翕宇

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Cellege of Optoelectronics > Graduate Institute of Lighting and Energy Photonics
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IQ失衡補償和VBLAST補償技術應用於 4 × 4多天線輸入多天線輸出60GHz極化多工暨子載波多工暨正交分頻多工光載微波訊號系統

4 × 4 MIMO 60-GHz Polmux-SCM-OFDM-RoF System Employing Equalizer with I/Q Imbalance Compensation and VBLAST Compensation

張翕宇 , Masters　　Advisor：林俊廷　　

繁體中文

4X4多天線輸入多天線輸出；極化多工；子載波多工；載波錯頻直接偵測技術； IQ失衡；垂直分層空間時間碼； 4X4 MIMO ； PolMux ； Subcarrier Multiplexing ； Carrier Offset Direct Detection ； IQ Imbalance ； VBLAST

Abstract │ Reference (38) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

In Recent years, the populations of using smart device is dramatically increasing. It brings a rapid development of modern network and wireless communication technology. Higher data rate is coupled with large bandwidth in order to support the change of smart device such as 4K-HD TV, Human-Computer Interaction and cloud service.
The free-license V-band (57-64 GHz) is able to provide considerably more bandwidth. However, V-band wireless transmission is limited by high propagation loss in air. Radio-over-fiber (RoF) system combines with fiber communication and V-band wireless communication. Moreover, multi-input multi-output (MIMO) technology can also promote spectral efficiency with transmitting multiple signals within the same bandwidth.
There is a power decay issue in traditional Polarization multiplexing division (Polmux) system. Several schemes have been proposed to solve this issue by adding polarization tracking or double guard band. This thesis proposed a brand new frequency offset 60-GHz Polmux-SCM-OFDM-RoF system which can solve the decay issue without adding extra component and guard band. Furthermore, proposed system combines 4 x 4 MIMO optical and MIMO wireless system. This thesis separates the channel response into many sub-matrices. Using fundamental principle to analysis the impact factor of the system and simulated method to verify it. In order to solve the impairment from IQ imbalance and uneven frequency response cause by 4 x 4 60-GHz MIMO-wireless channel, this thesis employing digital signal processing technologies include bit-loading algorithm, I/Q imbalance compensation and VBLAST compensation.

Reference ( 38 ) 〈TOP〉

[1] Lin, C. T., Chen, J. J., Dai, S. P., Peng, P. C., & Chi, S., "Impact of nonlinear transfer function and imperfect splitting ratio of MZM on optical up-conversion employing double sideband with carrier suppression modulation." Journal of Lightwave Technology 26.15: 2449-2459, (2008)
連結：
[2] Lin, C. T., Shih, P. T., Jiang Jr, W., Wong, E. Z., Chen, J. J., & Chi, S., "Photonic vector signal generation at microwave/millimeter-wave bands employing an optical frequency quadrupling scheme." Optics letters 34.14: 2171-2173, (2009)
連結：
[3] Jiang, W. J., Lin, C. T., Ng'oma, A., Shih, P. T., Chen, J. J., Sauer, M., ... & Chi, S., "Simple 14-Gb/s short-range radio-over-fiber system employing a single-electrode MZM for 60-GHz wireless applications."Lightwave Technology, Journal of 28.16: 2238-2246, (2010)
連結：
[4] Ng'oma, Anthony. Radio-over-fibre technology for broadband wireless communication systems. Technische Universiteit Eindhoven, 2005.
連結：
[5] Lin, C. T., Lin, Y. M., Chen, J. J., Dai, S. P., Shih, P. T., Peng, P. C., & Chi, S. "Optical direct-detection OFDM signal generation for radio-over-fiber link using frequency doubling scheme with carrier suppression."Optics express 16.9: 6056-6063, (2008)
連結：

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