Approximation of SNR degradation due to carrier frequency offset for OFDM in shadowed multipath channels
| Autor: | Kiseon Kim, Wooncheol Hwang, Hongku Kang |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Physics
Orthogonal frequency-division multiplexing business.industry Interference (wave propagation) Square (algebra) Computer Science Applications Computational physics Signal-to-noise ratio (imaging) Modeling and Simulation Carrier frequency offset Frequency offset Channel (broadcasting) Electrical and Electronic Engineering Telecommunications business Computer Science::Information Theory Degradation (telecommunications) |
| Zdroj: | IEEE Communications Letters. 7:581-583 |
| ISSN: | 1089-7798 |
| DOI: | 10.1109/lcomm.2003.821333 |
| Popis: | We derive an approximate expression for signal-to-noise ratio (SNR) degradation of orthogonal frequency division multiplexing due to carrier frequency offset over a shadowed multipath channel, to explicitly show the effects of system and channel parameters on the degradation of the received SNR. The results show that, for small frequency offset, the SNR degradation is proportional to the square of the frequency offset and the square of the number of subcarriers. It is also shown that, if E/sub s//N/sub 0/ is reasonably large, the SNR degradation becomes insensitive to E/sub s//N/sub 0/, which is contrary to the case of the additive white Gaussian noise channel. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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