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Capacity Performance Analysis for Decode-and-Forward OFDM Dual-Hop System
Ha-Nguyen VU Le Thanh TAN Hyung Yun KONG
Publication
IEICE TRANSACTIONS on Communications
Vol.E93-B
No.9
pp.2477-2480 Publication Date: 2010/09/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2477 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: OFDM transmission, decode and forward, multi-hop, ergodic capacity, probability density function,
Full Text: PDF(220.5KB)>>
Summary:
In this paper, we propose an exact analytical technique to evaluate the average capacity of a dual-hop OFDM relay system with decode-and-forward protocol in an independent and identical distribution (i.i.d.) Rayleigh fading channel. Four schemes, (no) matching "and" or "or" (no) power allocation, will be considered. First, the probability density function (pdf) for the end-to-end power channel gain for each scheme is described. Then, based on these pdf functions, we will give the expressions of the average capacity. Monte Carlo simulation results will be shown to confirm the analytical results for both the pdf functions and average capacities.
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