An MMSE fine carrier frequency synchronization algorithm for OFDM systems
| Autor: | Kyungwhoon Cheun, Heejin Roh, Jaehong Park |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Equalization
Orthogonal frequency-division multiplexing Computer science Data_CODINGANDINFORMATIONTHEORY Synchronization Frequency-division multiplexing Transmission (telecommunications) Media Technology Electronic engineering Detection theory Adjacent-channel interference Electrical and Electronic Engineering Algorithm Quadrature amplitude modulation Computer Science::Information Theory Phase-shift keying |
| Zdroj: | IEEE Transactions on Consumer Electronics. 43:761-766 |
| ISSN: | 0098-3063 |
| Popis: | In this paper, we describe a patent pending, fine carrier frequency synchronization algorithm based on a minimum mean-squared error (MMSE) approach for OFDM systems which is insensitive to symbol timing offsets. In order to obtain these attributes, the proposed algorithm adopts a cost function similar to the CMA (constant modulus algorithm) used for blind channel equalization. Another advantage of the algorithm is that the transmission of a known training pattern is unnecessary, thus, improving the transmission efficiency. A hardware efficient version of the proposed algorithm is also developed. Computer simulations are performed to evaluate the performance with QPSK and 64-QAM modulations under a frequency selective multipath channel. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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