Abstract
Orthogonal Frequency Division Multiplexing (OFDM) systems are commonly used to mitigate frequency-selective multipath fading and provide high-speed data transmission. In this paper, we derive new union bounds on the error probability of a coded OFDM system in wireless environments. In particular, we consider convolutionally coded OFDM systems employing single and multiple transmit antennas over correlated block fading (CBF) channels with perfect channel state information (CSI). Results show that the new union bound is tight to simulation results. In addition, the bound accurately captures the effect of the correlation between sub-carriers channels. It is shown that as the channel becomes more frequency-selective, the performance get better due to the increased frequency diversity. Moreover, the bound also captures the effect of multi-antenna as space diversity. The proposed bounds can be applied for coded OFDM systems employing different coding schemes over different channel models.
| Original language | English |
|---|---|
| Pages (from-to) | 307-320 |
| Number of pages | 14 |
| Journal | Wireless Personal Communications |
| Volume | 60 |
| Issue number | 2 |
| DOIs | |
| State | Published - Sep 2011 |
Bibliographical note
Funding Information:Acknowledgments This work was supported in part by KFUPM under grant number FT040009, by the Excellent Research Projects of National Taiwan University under Contract 97R0062-06, and by the National Science Council (ROC) under Contract NSC98-2220-E-002-005.
Keywords
- Correlated block fading
- Diversity
- Error probability
- Fading
- MIMO
- OFDM
- Rayleigh
- Space-time block codes
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
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