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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Estimation of the Bit Error Rate for Direct-Detected OFDM Signals With Optically Preamplified Receivers


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/72013


    Title: Estimation of the Bit Error Rate for Direct-Detected OFDM Signals With Optically Preamplified Receivers
    Authors: Wei-Ren Peng;Kai-Ming Feng;Willner, A.E.;Sien Chi
    教師: 馮開明
    Date: 2009
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: Journal of Lightwave Technology, IEEE, Volume 27, Issue 10, May 15, 2009, Pages 1340 - 1346
    Keywords: Bit error rate (BER)
    Direct detection
    Optical fiber communication
    Optical modulation
    Orthogonal frequency division multiplexing (OFDM)
    Abstract: In this paper, we provide a numerical bit error rate (BER) estimation approach for direct-detected orthogonal frequency division multiplexing (OFDM) signals in the presence of optical preamplified receivers. The individual BER of each subcarrier is first computed by considering their electrical signal-to-noise ratio (SNR), and then the ensemble BER is derived simply by taking the average of all the subcarriers' BERs. The calculated BER is verified by the conventional error-counting approach with high precision and is still accurate with higher quadratic-amplitude modulation (QAM) formats, even under the influences of the optical filtering and polarization mode dispersion (PMD) effects. Based on our simulation approach, the required extra power budget for 16- and 64-QAM relative to 4-QAM format are found to be ~3.8 and 8.2 dB, respectively, at a BER of 10-9. Furthermore, we use this approach to compare the receiving sensitivities and PMD tolerances for the previous proposed gapped and interleaved radio-frequency (RF)-tone-assisted OFDM systems. The results show that the gapped OFDM has a better sensitivity while the interleaved OFDM has a more PMD-tolerable capability.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/72013
    Appears in Collections:[電機工程學系] 期刊論文

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