MIMO SC-FDE Transmission Techniques with Channel Estimation and High-order Modulations
OFDM schemes have important limitations such as the high envelope fluctuations of the transmitted signals and its sensibility to carrier frequency errors.When these limitations bear critical we should consider SCFDE schemes(Single-Carrier Frequency Domain Equalization),which allow much higher power efficiency due to the lower envelope fluctuations.This can be further improved if the conventional linear FDE is replaced by an iterative FDE such as an IB-DFE(Iterative Block Decision Feedback Equalizer).In order to obtain good performance results,accurate channel estimates must be available at the receiver,especially if MIMO(Multiple Input,Multiple Output)and high-order modulations are to be used.For this purpose,pilot symbols and/or training sequences are usually multiplexed with data symbols,which lead to spectral degradation.As an alternative,we can use implicit pilots.In this paper,we consider SC-IB-FDE systems in MIMO 2×2 broadband with high order modulations and channel estimation.
Jo(a)o Carlos Silva Rui Dinis Nuno Souto Mário Marques da Silva
ISCTE/Instituto de Telecomunica(c)(o)es,Lisboa,Portugal ISR/IST,Lisboa,Portugal ISR/IST,Lisboa,Portugal UAL/Instituto de Telecomunica(c)(o)es,Lisboa,Portugal
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
105-112
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）