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Symbol Error Rate of Selection Amplify-and-Forward Relay Systems

This presentation explores the symbol error rate of selection amplify-and-forward (S-AF) relay systems versus the all-partners amplify-and-forward (AP-AF) method. Through system modeling and SER improvement analysis, the study compares the performance under different power division scenarios.

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Symbol Error Rate of Selection Amplify-and-Forward Relay Systems

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  1. Symbol Error Rate of Selection Amplify-and-Forward Relay Systems By: Yi Zhao, Raviraj Adve and Teng Joon Lim Presentation by: Amir Minayi Jalil

  2. SYSTEM MODEL

  3. A. SER of S-AF Systems

  4. B. SER Improvement: S-AF vs. AP-AF • To ensure a fair comparison, unit transmit energy and equal power division among cooperating nodes are assumed for both systems. • AP-AF: Es= Ei= 1/(m + 1) • S-AF: Es= Ei= 1/2

  5. So an upper bound can be introduced as

  6. Since α0 is exponentially distributed variable with parameter λ0, we have: x’ = 1 − x/δ

  7. We know: • λ0, λiand ξithe exponential distribution parameters of the Rayleigh channel amplitude squares α0, αiand βi

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