基于改进停车准则的BILCM-ID系统设计与性能评价

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Vehicular Technology Pub Date : 2024-12-23 DOI:10.1109/TVT.2024.3519540

Xuhui Ding;Yuchen Xu;Gaoyang Li;Kai Yang;Jinhong Yuan;Jianping An

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引用次数: 0

摘要

低密度奇偶校验（LDPC）码具有相对较低的解码复杂度和接近香农极限的性能。信道编码与调制的结合被称为比特交织编码调制（BICM），在通信和广播系统中得到了广泛的应用。特别是，软demapper和解码器之间的迭代消息传递过程已被证明可以有效地提高位交错LDPC编码调制迭代解码（BILCM-ID）系统的误码率（BER）性能。本研究提出了一种在概率域中表示高阶调制过程中迭代状态的新方法。此外，我们的方法还引入了一种改进的基于归一化信念进化模式（NBEP）的停止准则。仿真分析表明，与传统的硬决策方法相比，该算法可以将无效迭代延迟减少约88%，而误码率性能的下降可以忽略不计。

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Design and Performance Evaluation for BILCM-ID System With Improved Stopping Criterion

Low-density parity-check (LDPC) codes characterize both a relatively low decoding complexity and a performance nearing the Shannon limit. The integration of channel coding with modulation, known as bit-interleaved coded modulation (BICM), is widely utilized in communication and broadcasting systems. In particular, iterative message passing processes between soft demapper and decoder have proven effective in improving the bit error rate (BER) performance in the bit-interleaved LDPC coded modulation with iterative decoding (BILCM-ID) systems. This study proposes a novel approach for representing the iterative state in the probability domain for high-order modulation within the BILCM-ID process. Additionally, our methods introduce an improved stopping criterion based on the normalized belief evolution pattern (NBEP). Simulation analyses demonstrate that, compared to conventional hard-decision methods, the proposed algorithm can reduce ineffective iteration delay by approximately 88% with negligible degradation in BER performance.

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来源期刊

IEEE Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.