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Performance of Coherent Receivers with Hybrid SC/MRC over Nakagami- m Fading Channels

Performance of Coherent Receivers with Hybrid SC/MRC over Nakagami- m Fading Channels. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL.48,NO.4,JULY 1999. Advisor: 王瑞騰 Student: 李昌穆. Outline. Introduction Joint Statistics of The Hybrid SC/MRC Receiver Output

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Performance of Coherent Receivers with Hybrid SC/MRC over Nakagami- m Fading Channels

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  1. Performance of Coherent Receivers with Hybrid SC/MRC over Nakagami-m Fading Channels IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL.48,NO.4,JULY 1999 Advisor:王瑞騰 Student:李昌穆

  2. Outline • Introduction • Joint Statistics of The Hybrid SC/MRC Receiver Output • Average BER of Hybrid SC/MRC Binary Receivers • Numerical Examples & Discussions • Conclusions • References

  3. Introduction • Performance analysis of two hybrid SC/MRC diversity receivers over Nakagami-m fading channels . • Numerically compared with that of the conventional SC and MRC schemes.

  4. Selective Combining

  5. Maximal Ratio Combining

  6. Joint Statistics of The Hybrid SC/MRC Receiver Output

  7. Average BER of Hybrid SC/MRC Binary Receivers g =1 for coherent BPSK g = 0.5 for coherent orthogonal BFSK g =0.715 for coherent BFSK with minimum correlation Total SNR :

  8. Average BER of SC/MRC-2/3 Binary Receivers

  9. Average BER of SC/MRC-2/4 Binary Receivers

  10. Numerical Examples & Discussions

  11. Numerical Examples & Discussions

  12. Numerical Examples & Discussions

  13. Numerical Examples & Discussions

  14. Conclusions • The BER degradation arising from the use of hybrid SC/MRC instead of MRC is independent of the average SNR regardless of the severity of the fading. • MRC provides a higher rate of improvement than the hybrid SC/MRC as the severity of fading decreases.

  15. References • 李藯澤、許家華 /譯 , WiMAX技術原理與應用 , 碁峯 , 2007 • Proakis , Digital Communications , McGraw-Hill , 2001 • David Tse 、Pramod Viswanath , Fundamentals of Wireless Communication , Cambridge , 2005

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