Power-Imbalanced Low-Density Signatures (LDS) From Eisenstein Numbers
| Autor: | Zilong Liu, Zeina Mheich, Pei Xiao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Signal Processing (eess.SP)
FOS: Computer and information sciences Sequence 021103 operations research Hardware_MEMORYSTRUCTURES Computer science Information Theory (cs.IT) Computer Science - Information Theory 0211 other engineering and technologies Word error rate 020302 automobile design & engineering 02 engineering and technology Chip Backward compatibility Power (physics) Range (mathematics) 0203 mechanical engineering Code (cryptography) FOS: Electrical engineering electronic engineering information engineering Electrical Engineering and Systems Science - Signal Processing Algorithm Rayleigh fading |
| Zdroj: | 2019 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS) Web of Science APWCS |
| DOI: | 10.1109/vts-apwcs.2019.8851632 |
| Popis: | As a special case of sparse code multiple access (SCMA), low-density signatures based code-division multiple access (LDS-CDMA) was widely believed to have worse error rate performance compared to SCMA. With the aid of Eisenstein numbers, we present a novel class of LDS which can achieve error rate performances comparable to that of SCMA in Rayleigh fading channels and better performances in Gaussian channels. This is achieved by designing power-imbalanced LDS such that variation of user powers can be seen both in every chip window and the entire sequence window. As LDS-CDMA is more flexible in terms of its backwards compatibility, our proposed LDS are a promising sequence candidate for dynamic machine-type networks serving a wide range of communication devices. |
| Databáze: | OpenAIRE |
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