Channel Estimation for SM Systems over Time-Varying Rayleigh Fading Channels

Acar Y., Dogan H., Panayirei E.

8th IEEE International Conference on Application of Information and Communication Technologies (AICT), Astana, Kazakistan, 15 - 17 Ekim 2014, ss.336-339 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Doi Numarası: 10.1109/icaict.2014.7035975
  • Basıldığı Şehir: Astana
  • Basıldığı Ülke: Kazakistan
  • Sayfa Sayıları: ss.336-339
  • İstanbul Üniversitesi Adresli: Evet

Özet

This paper is concerned with the challenging and timely problem of channel estimation for spatial modulated systems in the presence of time varying channels. Recently, estimation of channel state information for SM systems is investigated by the recursive least square (RLS) algorithm for slow fading channels. However, it is clear that the RLS based receiver will have a performance degradation for fast fading channels. Therefore, we developed iterative channel estimation based on detected symbols and curve fitting to track the channel variations for SM systems. Simulation results have demonstrated that the proposed iterative channel estimation offer substantial performance gains over the RLS channel estimation. In particular, a savings of about 4dB is obtained at BER = 10(-7), as compared with RLS based receiver at 150km/h for 2 x 4 single carrier SM systems.