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| Content Provider | IET Digital Library |
|---|---|
| Author | Luong, Duy A. Thang, Truong C. Pham, Anh T. |
| Abstract | In this study, the authors theoretically study the performance of direct-detection free-space optical communication systems using binary phase-shift keying subcarrier-intensity modulation and avalanche photodiode (APD). The system bit-error rate and channel capacity are theoretically derived in cases of log-normal and gamma-gamma channel models for weak-to-moderate and moderate-to-strong atmospheric turbulence conditions, respectively. The authors quantitatively discuss the optimal values of the APD average gain, required transmitted optical power, and operating bit-rate considering various turbulence conditions, APD shot noise and thermal noise. It is seen that, although the impact of turbulence is severe, a proper selection of APD average gain could significantly improve the system performance in both cases of turbulence channels. The optimal value of APD average gain remains almost the same for different levels of turbulence; nevertheless it varies significantly in accordance to the change of receiver noise temperature. |
| Starting Page | 738 |
| Ending Page | 744 |
| Page Count | 7 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 8, May (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/8 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2012.0600 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | APD Average Gain APD Shot Noise Atmospheric Turbulence Avalanche Photodiode Binary Phase-shift Keying-subcarrier-intensity Modulation Channel Capacity Direct-detection Free-space Optical Communication System Error Statistics Free Space Optical Link Gamma-gamma Channel Model Log-normal Channel Model Moderate-to-strong Atmospheric Turbulence Condition Modulation And Coding Method Operating Bit-rate Optical Communication Phase Shift Keying Photoelectric Device Receiver Noise Temperature Required Transmitted Optical Power Statistics System Bit-error Rate Thermal Noise Thermal Noises Turbulence Channel Weak-to-moderate Atmospheric Turbulence Condition Wireless Channel Wireless Optical Communication |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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