A novel detection algorithm is proposed for multiuser detection (MUD) in uplink orthogonal frequency division multiplexing-interleave division multiple access (OFDM-IDMA) systems employing the expectation propagation (EP) algorithm. Compared to the conventional elementary signal estimator (ESE) detector, the proposed detector is capable of reducing the complexity with a favorable performance imposed with the accurate estimate of the posterior distribution. Then, the proposed detector can also obtain a considerable bit error rate (BER) performance in high order modulation with high transmission rate. Finally, we design a new scheme suitable for OFDM-IDMA in the presence of multiple carrier frequency offsets (CFOs). Our simulation results illustrate that the proposed scheme can effectively mitigate the influence of multiple CFOs.


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    Title :

    EP-based Detection for Uplink OFDM-IDMA with Carrier Frequency Offsets


    Contributors:
    Chen, Yun (author) / Xiao, Yue (author)


    Publication date :

    2020-05-01


    Size :

    289899 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English






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