Adaptive low-rank MIMO-OFDM channel estimation

Özdemir M. K., ARSLAN H., Arvas E.

2005 IEEE Annual Conference on Wireless and Microwave Technology, WAMICON 2005, Clearwater, FL, Amerika Birleşik Devletleri, 6 - 07 Nisan 2005, cilt.2005, ss.87-91 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 2005
  • Doi Numarası: 10.1109/wamic.2005.1528390
  • Basıldığı Şehir: Clearwater, FL
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.87-91
  • İstanbul Medipol Üniversitesi Adresli: Evet

Özet

For the practical LMMSE channel estimation of MIMO-OFDM systems, the high computational complexity of LMMSE needs to be eliminated. In this study, we develop a low-complexity, generalized low-rank LMMSE channel estimator for MIMO-OFDM systems using comb-type pi-lots. The estimator utilizes the relationship between the subspaces of the frequency domain channels at the pilots and non-pilots subcarriers. By then using subspace tracking, it is observed that practical LMMSE channel estimation of MIMO-OFDM systems can be feasible.