Security aware hybrid precoding based peak‐to‐average power ratio reduction Approaches for telecommunication systems,International Journal of Communication Systems

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Security aware hybrid precoding based peak‐to‐average power ratio reduction Approaches for telecommunication systems
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2020-07-10 , DOI: 10.1002/dac.4531
Mrinmoy Sarkar ₁ , Asok Kumar ₂ , Bansibadan Maji ₃

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In wireless telecommunication, one of the modulation approaches used is the orthogonal frequency division multiplexing (OFDM). Moreover, the high peak‐to‐average power ratio (PAPR) is the one notorious demerit in OFDM systems. Hence, the high power amplifier (HPA) is used in its linear region. Otherwise, the bit error rate (BER) will be increased. Several approaches are proposed in the wireless communications for reducing the PAPR issue. In this paper, we propose a hybrid Discrete Hartley Matrix Transform (DHMT) precoding using both selected mapping (SLM) and partial transmit sequence (PTS) PAPR reduction strategies. For the multicarrier modulation process, instead of Inverse Fast Fourier transform (IFFT) operation, the DHMT operation is used because of its low computational complexity. Based on multi‐chaotic, the time‐frequency domain encryption (TFDE) approach is adopted for physical layer security to confirm the security in data transmission. For enhancing the physical layer security, the proposed encryption system generates chaotic sequences based on Logistic maps and Lozi in the frequency and time domains together. In this study, the implementation of the DHMT‐based OFDM system is processed to reduce the maximum PAPR. Implementation is performed on the MATLAB platform, and the performances are calculated using complementary cumulative distribution function (CCDF), BER regards to signal‐to‐noise ratio (SNR), and the outputs are compared based on the computation time. However, compared with the existing models, the proposed model produced better PAPR minimization regarding SNR.

中文翻译：

基于安全意识的混合预编码的峰均功率比降低方法，用于电信系统

在无线电信中，使用的一种调制方法是正交频分复用（OFDM）。此外，高峰均功率比（PAPR）是OFDM系统中的一个臭名昭著的缺点。因此，高功率放大器（HPA）用于其线性区域。否则，将提高误码率（BER）。在无线通信中提出了几种减少PAPR问题的方法。在本文中，我们提出了使用选择映射（SLM）和部分传输序列（PTS）PAPR降低策略的混合离散哈特利矩阵变换（DHMT）预编码。对于多载波调制过程，由于其计算复杂度低，因此使用DHMT操作代替了快速傅里叶逆变换（IFFT）操作。基于多混沌，物理层安全性采用时频域加密（TFDE）方法来确认数据传输的安全性。为了增强物理层的安全性，提出的加密系统基于Logistic映射和Lozi在频域和时域中生成混沌序列。在本研究中，对基于DHMT的OFDM系统的实现进行了处理，以降低最大PAPR。在MATLAB平台上执行实现，并使用互补累积分布函数（CCDF）计算性能，BER考虑信噪比（SNR），并根据计算时间比较输出。但是，与现有模型相比，所提出的模型在SNR方面产生了更好的PAPR最小化。

更新日期：2020-07-10

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