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Code-Aided Modulation Classification Algorithm for Multiuser Uplink SC-FDMA Systems
- Source :
- IEEE Wireless Communications Letters. 10:1023-1027
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- Modulation classification has attracted great interest in rapid deployment in wireless radios for civilian and military applications. While there is a massive amount of works on this topic for single-signal transmissions, a few works are reported in the literature for multi-signal transmissions. Therefore, there is an urgent need to explore different modulation classification algorithms for such scenarios. In this work, we propose a novel modulation classification algorithm for multiuser uplink single-carrier frequency division multiple access systems exploiting the channel decoder’s soft information as a beneficial resource to improve the classification performance. Starting from the maximum-likelihood principle, we analytically design the proposed algorithm using a space-alternating generalized expectation-maximization approach. Channel estimation is also developed as an auxiliary task for the proposed algorithm. Simulation results indicate that the proposed algorithm is superior to the traditional algorithms with reduced processing time.
- Subjects :
- Frequency-division multiple access
business.industry
Computer science
020302 automobile design & engineering
020206 networking & telecommunications
02 engineering and technology
Task (computing)
Statistical classification
0203 mechanical engineering
Control and Systems Engineering
Modulation
Telecommunications link
0202 electrical engineering, electronic engineering, information engineering
Code (cryptography)
Wireless
Electrical and Electronic Engineering
business
Algorithm
Communication channel
Subjects
Details
- ISSN :
- 21622345 and 21622337
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- IEEE Wireless Communications Letters
- Accession number :
- edsair.doi...........e0b732928cee633c23e16240fcac49f2