Performance Analysis of FCI-DCSK-NR over Power Line Channel

doi:10.12141/j.issn.1000-565X.250233

Abstract

Abstract:

A differential chaos shift keying scheme that fuses noise reduction with full carrier indexing (FCI-DCSK-NR) is proposed for power-line channels. The scheme integrates noise reduction and full-carrier index techniques into differential chaos shift keying (DCSK) modulation to effectively tackle the complex power line channel environment, especially the interference caused by impulsive noise. Firstly, in this scheme, all subcarriers except the refe-rence carrier are divided into two categories, namely Type-1 active carriers and Type-2 active carriers. The two types of carriers are distinguished via index bits; the carriers selected by the index bits serve as Type-1 active ca-rriers, while the remaining subcarriers function as Type-2 active carriers. Subsequently, Type-1 and Type-2 active carriers transmit Type-1 and Type-2 modulation bits using chaotic signals and their Hilbert-transformed signals, respectively. Moreover, identical information is transmitted in multiple distinct time slots at the transmitter, and the received replicas are averaged at the receiver to mitigate impulsive noise. A closed-form bit-error-rate (Bit error rate, BER) expression for FCI-DCSK-NR over power line channels is derived and verified by Monte-Carlo simulations. Analytical and numerical results show that the proposed scheme effectively mitigates impulse noise in power line channels. Compared to traditional DCSK and Generalized Carrier Index DCSK (GCI-DCSK) schemes, the proposed method exhibits improvements in both BER performance and data rate. Additionally, this experimental scheme is well-suited for integration into training programs of power grid companies, universities, and research institutes, contributing to the cultivation of relevant technical talent.

Key words: power line channel, full carrier indexing, differential chaos shift keying, impulsive noise, bit error rate

CLC Number:

TN911.3

CHENG Guixian, LING Qin, ZHENG Cai, CHEN Fang, ZHANG Quanling, CHEN Pingping. Performance Analysis of FCI-DCSK-NR over Power Line Channel[J]. Journal of South China University of Technology(Natural Science Edition), 2026, 54(1): 30-41.

Figures/Tables 11

Fig.1

Fig.2

Table 1

Symbols and their meanings"

包含背景噪声和脉冲噪声的符号	含义		含义
$P I$	传输比特的总误码率	$P G$	传输比特的总误码率
$P I 1$	索引比特的误码率	$P G 1$	索引比特的误码率
$P I 2$	调制比特的误码率	$P G 2$	调制比特的误码率
$P I S$	索引比特的符号错误率	$P G S$	索引比特的符号错误率
$P I x$	第1类调制比特的误码率	$P G x$	第1类调制比特的误码率
$P I y$	第2类调制比特的误码率	$P G y$	第2类调制比特的误码率

Table 1

Table 2

Comparison of transmitter hardware complexity"

方案	加法器数量	乘法器数量	脉冲成形滤波器数量	希尔伯特滤波器数量	调制器	其他模块
FCI-DCSK-NR	$u 2 + u 3$	$u 2 + u 3 + 1$	2	1	DCSK调制器	混沌信号生成器、噪声平均器、全载波索引选择器
GCI-DCSK	1	$u 2 + 1$	1	0	DCSK调制器	混沌信号生成器、索引选择器
NR-DCSK	0	1	1	0	DCSK调制器	混沌信号生成器、时延复制器
DCSK	1	1	1	0	DCSK调制器

Table 2

Table 3

Comparison of receiver hardware complexity"

方案	乘法器数量	匹配滤波器数量	希尔伯特滤波器数量	解调器	其他模块
FCI-DCSK-NR	$u 2 + u 3 + 1$	$u 2 + u 3 + 1$	1	DCSK解调器	全载波索引检测器、噪声平均器
GCI-DCSK	$u 2 + 1$	$u 2 + 1$	0	DCSK解调器	索引检测器
NR-DCSK	1	1	0	DCSK解调器	移动平均器
DCSK	1	1	0	DCSK解调器

Table 3

Table 4

Comparison of spectral efficiency， energy efficiency and data rate"

方案	频谱效率	能量效率	数据速率
DCSK	$1 2 B β T c$	$1 2 E c x$	$1 β T c$
FM-DCSK	$1 2 B β T c$	$1 2 E c x$	$1 β T c$
CS-DCSK	$1 B β T c$	$1 E c x$	$2 β T c$
GCI-DCSK	$u 1 + u 2 m + 1 B β T c$	$u 1 + u 2 m + 1 E c x$	$u 1 + u 2 + 1 β T c$
FCI-DCSK-NR	$u 1 + m m + 1 B β T c$	$u 1 + m m + 1 E c x$	$u 1 + m + 1 β T c$

Table 4

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

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