التفاصيل البيبلوغرافية
| العنوان: |
Low-Complexity Decoder for Overloaded Uniquely Decodable Synchronous CDMA |
| المؤلفون: |
Michel Kulhandjian, Hovannes Kulhandjian, Claude D'Amours, Halim Yanikomeroglu, Dimitris A. Pados, Gurgen Khachatrian |
| المصدر: |
IEEE Access, Vol 10, Pp 46255-46275 (2022) |
| بيانات النشر: |
IEEE, 2022. |
| سنة النشر: |
2022 |
| المجموعة: |
LCC:Electrical engineering. Electronics. Nuclear engineering |
| مصطلحات موضوعية: |
Uniquely decodable (UD) codes, overloaded CDMA, overloaded binary and ternary spreading spreading codes, Electrical engineering. Electronics. Nuclear engineering, TK1-9971 |
| الوصف: |
We consider the problem of designing a low-complexity decoder for antipodal uniquely decodable (UD) /errorless code sets for overloaded synchronous code-division multiple access (CDMA) systems, where the number of signals $K_{\mathrm{max}}^{a}$ is the largest known for the given code length $L$ . In our complexity analysis, we illustrate that compared to maximum-likelihood (ML) decoder, which has an exponential computational complexity for even moderate code lengths, the proposed decoder has a quasi-quadratic computational complexity. Simulation results in terms of bit-error-rate (BER) demonstrate that the performance of the proposed decoder has only a $1-2$ dB degradation in signal-to-noise ratio (SNR) at a BER of 10−3 when compared to ML. Moreover, we derive the proof of the minimum Manhattan distance of such UD codes and we provide the proofs for the propositions; these proofs constitute the foundation of the formal proof for the maximum number users $K_{\mathrm{max}}^{a}$ for $L=8$ . |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2169-3536 |
| Relation: |
https://ieeexplore.ieee.org/document/9762979/; https://doaj.org/toc/2169-3536 |
| DOI: |
10.1109/ACCESS.2022.3170491 |
| URL الوصول: |
https://doaj.org/article/3be6cf2916fe46c4b74e08f67c178fee |
| رقم الانضمام: |
edsdoj.3be6cf2916fe46c4b74e08f67c178fee |
| قاعدة البيانات: |
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