Some new RS-coded orthogonal modulation schemes for future GNSS

Cho, Hyunwoo; Song, Hong‐Yeop; Ahn, Jae Min; Lim, Deok Won

doi:10.1016/j.icte.2021.04.004

Cited by 4 publications

(2 citation statements)

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“…RS codes have a useful algebraic framework that is capable of correcting not just common errors but also unforeseen error patterns [5,6]. The growth of the positioning, navigation, and timing (PNT) market demanding the service related to GNSS signals asks for much-improved accuracy [7,8], and the CSK modulation combined with Reed-Solomon (RS) codes helps it achieve the increased data rate. It implements a low-complex iterative symbol-level decoding scheme for Reed-Solomon codes but only works at a relatively lower complexity [9].…”

Section: Introductionmentioning

confidence: 99%

Several Efficient Alternative Solutions for RS Codes in RAID 6

Xue

2024

HSET

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The RAID-6 specification requires a storage system with multiple storage devices to be able to endure the failure of any two parities. RAID-6 can be implemented using a variety of erasure coding methods, but each has drawbacks, like low fault tolerance, bad writing performance low decoding speed, and so on. In this paper, we research a variety of materials, explore RAID 6 disks to comprehend their purpose and prerequisites, and understand how to decode RS codes. In order to help people find a decoding method that is more appropriate to their own systems and actual needs, we research and compare numerous high-quality alternating decoding techniques, and the RAID 6 Liberation codes and Row-Diagonal Parity emerge as the winners. We introduce their decoding methods briefly and list their advantages and disadvantages in this paper for people to request based on their needs. Finally, we compare different decoding methods, propose practical application scenarios and future development directions for these more efficient decoding methods, and also point out their existing shortcomings.

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Section: Introductionmentioning

confidence: 99%

Several Efficient Alternative Solutions for RS Codes in RAID 6

Xue

2024

HSET

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“…However, compared with BPSK, CSK consumes more resources and has higher computational complexity. For CSK signals, scholars have mainly studied the improvement of CSK modulation and demodulation algorithms, as well as the combination of coding techniques to improve the reliability of transmission [23][24][25][26]. The tracking algorithms for BPSK signals are relatively mature, and the research on CSK signal tracking is not sufficient, mainly focusing on reducing the number of correlators and the demodulation complexity.…”

Section: Introductionmentioning

confidence: 99%

Research on Tracking Technique Based on BPSK-CSK Signals

Chen,

Cheng,

et al. 2024

Electronics

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The code-shift keying (CSK) modulation method can achieve higher information transmission rates without changing the spread spectrum signal bandwidth. In order to optimise the spread spectrum modulation and demodulation of GNSS signals, in addition to the signal structure, binary phase-shift keying (BPSK) and CSK signals using time-division multiplexing are proposed. A tracking method based on the BPSK-CSK signals is also proposed, which generates the P-branch local codes by fast Fourier transform to obtain the code-slice spacings for the E-branch and the L-branch local codes. Then, the tracked BPSK signals and tracked CSK signals are compared and analysed. Finally, the bit error rate (BER) and tracking error of each method are compared and analysed by comparing with the tracking of conventional BPSK signals and tracking of CSK signals, in order to verify the convergence process of the I-branch integral value. The BPSK-CSK signal tracking method proposed in this paper combines the high information transmission rate of CSK-modulated signals and the low BER of BPSK signals, and the results provide a solid foundation for high-precision GNSS services.

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