Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm
Multi-<i>h</i> continuous phase modulation (CPM), with extremely high spectral efficiency, involves the plague of high demodulation complexity with a large number of matched filters and a complex trellis. In this paper, an efficient all-digital demodulator for multi-<i>h</i>...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-11-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/11/1530 |
| _version_ | 1797459427452780544 |
|---|---|
| author | Le Wang Huan Wen Xucen Wu Qingping Song |
| author_facet | Le Wang Huan Wen Xucen Wu Qingping Song |
| author_sort | Le Wang |
| collection | DOAJ |
| description | Multi-<i>h</i> continuous phase modulation (CPM), with extremely high spectral efficiency, involves the plague of high demodulation complexity with a large number of matched filters and a complex trellis. In this paper, an efficient all-digital demodulator for multi-<i>h</i> continuous phase modulation (CPM) is proposed based on a low-complexity decision-directed synchronization algorithm. Based on the maximum-likelihood estimation of the carrier phase and timing errors, we propose a reduced-complexity timing error detector with linear phase approximation (LPA) to the phase of the multi-<i>h</i> CPM. Compared with the traditional synchronization methods, it avoids derivative matched filtering and reduces about 2/3 of matched filters. The estimated accuracy and bit error rate (BER) performance of the LPA-based synchronization algorithm have no loss, as shown by the numerical simulation. Its stability is verified by the derived S-curve. Then, the receivers with the LPA-based synchronization for the three kinds of promising multi-<i>h</i> CPM are implemented on a Xilinx Kintex-7 FPGA platform. The experimental results show that the onboard tested BER of the proposed design has an ignorable loss in the numerical simulation. The implementation overhead on FPGA is significantly reduced by about 27% slices, 64% DSPs, and 70% block RAMs compared with the conventional method. |
| first_indexed | 2024-03-09T16:51:11Z |
| format | Article |
| id | doaj.art-c2f287b95e4b49819b4f28421c901317 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-09T16:51:11Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-c2f287b95e4b49819b4f28421c9013172023-11-24T14:41:02ZengMDPI AGEntropy1099-43002023-11-012511153010.3390/e25111530Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization AlgorithmLe Wang0Huan Wen1Xucen Wu2Qingping Song3School of Information Science and Technology, North China University of Technology, Beijing 100144, ChinaSchool of Information Science and Technology, North China University of Technology, Beijing 100144, ChinaSchool of Information Science and Technology, North China University of Technology, Beijing 100144, ChinaBeijing Institute of Control and Electronic Technology, Beijing 100038, ChinaMulti-<i>h</i> continuous phase modulation (CPM), with extremely high spectral efficiency, involves the plague of high demodulation complexity with a large number of matched filters and a complex trellis. In this paper, an efficient all-digital demodulator for multi-<i>h</i> continuous phase modulation (CPM) is proposed based on a low-complexity decision-directed synchronization algorithm. Based on the maximum-likelihood estimation of the carrier phase and timing errors, we propose a reduced-complexity timing error detector with linear phase approximation (LPA) to the phase of the multi-<i>h</i> CPM. Compared with the traditional synchronization methods, it avoids derivative matched filtering and reduces about 2/3 of matched filters. The estimated accuracy and bit error rate (BER) performance of the LPA-based synchronization algorithm have no loss, as shown by the numerical simulation. Its stability is verified by the derived S-curve. Then, the receivers with the LPA-based synchronization for the three kinds of promising multi-<i>h</i> CPM are implemented on a Xilinx Kintex-7 FPGA platform. The experimental results show that the onboard tested BER of the proposed design has an ignorable loss in the numerical simulation. The implementation overhead on FPGA is significantly reduced by about 27% slices, 64% DSPs, and 70% block RAMs compared with the conventional method.https://www.mdpi.com/1099-4300/25/11/1530multi-h CPMlinear phase approximation (LPA)synchronizationFPGA implementation |
| spellingShingle | Le Wang Huan Wen Xucen Wu Qingping Song Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm Entropy multi-h CPM linear phase approximation (LPA) synchronization FPGA implementation |
| title | Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm |
| title_full | Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm |
| title_fullStr | Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm |
| title_full_unstemmed | Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm |
| title_short | Design and Implementation of a Low-Complexity Multi-<i>h</i> CPM Receiver with Linear Phase Approximation Synchronization Algorithm |
| title_sort | design and implementation of a low complexity multi i h i cpm receiver with linear phase approximation synchronization algorithm |
| topic | multi-h CPM linear phase approximation (LPA) synchronization FPGA implementation |
| url | https://www.mdpi.com/1099-4300/25/11/1530 |
| work_keys_str_mv | AT lewang designandimplementationofalowcomplexitymultiihicpmreceiverwithlinearphaseapproximationsynchronizationalgorithm AT huanwen designandimplementationofalowcomplexitymultiihicpmreceiverwithlinearphaseapproximationsynchronizationalgorithm AT xucenwu designandimplementationofalowcomplexitymultiihicpmreceiverwithlinearphaseapproximationsynchronizationalgorithm AT qingpingsong designandimplementationofalowcomplexitymultiihicpmreceiverwithlinearphaseapproximationsynchronizationalgorithm |