The Fourth Generation Wireless Communications and Beyond

Research Article

An Interleave-Division Multiplexing (IDM) based Modulation for 3GPP LTE Downlink

  • @INPROCEEDINGS{10.1109/CHINACOM.2008.4685068,
        author={Dageng Chen and Yi Wang and Jiayin Zhang},
        title={An Interleave-Division Multiplexing (IDM) based Modulation for 3GPP LTE Downlink},
        proceedings={The Fourth Generation Wireless Communications and Beyond},
        publisher={IEEE},
        proceedings_a={CHINACOM2008-INDUSTRIAL},
        year={2008},
        month={11},
        keywords={Orthogonal Frequency Division Multiplexing (OFDM) Interleave-Division Multiple-Access (IDMA) Layered-Modulation (LM) Code Divison Multiple Access (CDMA)},
        doi={10.1109/CHINACOM.2008.4685068}
    }
    
  • Dageng Chen
    Yi Wang
    Jiayin Zhang
    Year: 2008
    An Interleave-Division Multiplexing (IDM) based Modulation for 3GPP LTE Downlink
    CHINACOM2008-INDUSTRIAL
    IEEE
    DOI: 10.1109/CHINACOM.2008.4685068
Dageng Chen1,*, Yi Wang1,*, Jiayin Zhang1,*
  • 1: Huawei Technologies Co., Ltd. No.450, Jinyu road, Shanghai, China, 201206 Tel: +86-21-50993168, Fax: +86-21-50993619
*Contact email: dagengchen@huawei.com, yi.wang@huawei.com, zhangjiayin@huawei.com

Abstract

Interleave-Division Multiple-Access (IDMA) is an efficient multiple access technique to improve high spectrum efficiency for cellular communications. In this paper IDM-based modulation (called layered modulation (LM)) is proposed for OFDM systems. The idea of LM is to multiplex multiple parallel layers of data streams by performing repetition and layer-specific interleaver on each layer. Since LM code bits are fully distributed in time-frequency plane, by the aid of low-complexity chip-by-chip interference cancellation time-frequency diversity can be well exploited in LM. Applying LM to 3GPP LTE downlink, we compare LM to M-PSK/QAM modulation. Numerical results show that the LM can achieve superior performance over M-PSK/QAM. The performance gain over QPSK, 8PSK and 16QAM is 1.1dB, 2.2dB and 0.6dB, respectively.