Spatial Modulation in the Presence of I/Q Imbalance: Optimal Detector & Performance Analysis
IEEE COMMUNICATIONS LETTERS, cilt.22, sa.8, ss.1572-1575, 2018 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 22 Sayı: 8
- Basım Tarihi: 2018
- Doi Numarası: 10.1109/lcomm.2018.2836448
- Dergi Adı: IEEE COMMUNICATIONS LETTERS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1572-1575
- Anahtar Kelimeler: Error performance analysis, I/Q imbalance, maximum likelihood detection, spatial modulation
- Erciyes Üniversitesi Adresli: Evet
Özet
Spatial modulation (SM) is affected by the impacts of in-phase and quadrature-phase imbalance (IQI), which cause degradation of system performance in practical terms. To address this concern, an optimal maximum likelihood detector is proposed for SM-based transmission and the system performance is analyzed by computer simulations and analytical derivations. In addition, this optimal receiver is compared with a non-optimal receiver. Specifically, pairwise and average hit error probabilities are derived for the optimal detector. The results prove that IQI is a critical issue for SM-based transmission and the proposed optimal receiver significantly enhances the SM system performance in the presence of IQI.