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首页> 外文期刊>Journal of Computers >A Novel G-OFDM-IDMA Based Downlink Transmission Scheme for Femtocell Networks
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A Novel G-OFDM-IDMA Based Downlink Transmission Scheme for Femtocell Networks

机译:用于毫微微小区网络的新型G-OFDM-IDMA的下行链路传输方案

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—In this paper, we present a novel grouped OFDM-IDMA based downlink transmission scheme for femtocell networks. To avoid the cross-tier interference, we assign the femto users and marco users into different subcarrier groups for transmission. IDMA is used to mitigate the co-tier interference within the same group of users. We give the detailed system model as well as the transceiver structure of the proposed scheme. With the notion of SNR evolution function, we investigate the performance of the proposed scheme in terms of spectral efficiency and bit error rate (BER). Both theoretical analysis and simulations indicate that with the assistance of femtocell and grouping, the proposed scheme achieves better performance compared with the traditional OFDM-IDMA systems, while at the same time maintains an even lower complexity at the user terminal than the latter.
机译:- 本文,我们提出了一种用于毫微微小区网络的基于DM-IDMA的下行链路传输方案。为避免交叉层干扰,我们将毫微微用户和Marco用户分配到不同的子载波组以进行传输。 idma用于减轻同一组用户内的共同干扰。我们提供详细的系统模型以及所提出的方案的收发器结构。随着SNR演进功能的概念,我们在频谱效率和误码率(BER)方面调查所提出的方案的性能。理论分析和模拟都表明,在毫微微蜂窝线和分组的帮助下,与传统的OFDM-IDMA系统相比,所提出的方案实现了更好的性能,同时在用户终端上保持比后者更低的复杂性。

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