MIMO channels with limited rate feedback and RVQ MIMO kanallarda sinirli hizda geribesleme ve RVQ
2007 IEEE 15th Signal Processing and Communications Applications, SIU, Eskişehir, Türkiye, 11 - 13 Haziran 2007, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/siu.2007.4298746
- Basıldığı Şehir: Eskişehir
- Basıldığı Ülke: Türkiye
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
The capacity increases promised by multi-input multi-output (MIMO) systems usually come with requirements in regard to channel knowledge. We study the capacity of a MIMO scheme with perfect channel state information (CSI) at the receiver side where the transmitter has only a quantized version of the CSI due to a limited rate feedback channel. Random vector quantization is investigated along with a reduced number of precoders. It is found out that capacity losses are quite tolerable even in the case of small number of bits per quantized precoder.