Performance Analysis of Uplink IM-OFDMA Systems in the Presence of CFO and Rx-IQI
Yükleniyor...
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE Computer Society
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
Index modulation-based orthogonal frequency divi sion multiple access (IM-OFDMA) has been recently proposed as a promising candidate for future wireless communication systems due to its superior spectral efficiency and error performance compared to conventional multiple access schemes. Therefore, it has been under investigation by researchers analyzing its performance considering different scenarios and assumptions. Following this direction, this paper presents the error perfor mance of the uplink IM-OFDMA in the presence of carrier fre quency offset (CFO) and receiver (Rx) in-phase and quadrature imbalance (IQI). In particular, the individual and joint effects of the CFO and Rx-IQI on the bit-error-rate (BER) performance of the uplink IM-OFDMA scheme are investigated, and then the IM-OFDMA is compared with the conventional OFDMA scheme by considering the detrimental effect of CFO and Rx IQI. Accordingly, this paper shows that IM-OFDMA achieves better BER performance results than the OFDMA scheme in the presence of CFO and Rx-IQI. However, the obtained results also reveal that the IM-OFDMA scheme is very sensitive to RF impairments even though it performs better than conventional OFDMA.
Açıklama
Anahtar Kelimeler
IM-OFDMA, OFDMA, index modulation, carrier frequency offset, IQ imbalance
Kaynak
37th International Conference on Information Networking, ICOIN 2023 Bangkok 11 January 2023through 14 January 2023
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
