Kalman Channel Estimation for MIMO Systems in Flat Fading Channels

• Main Authors: Guo-Jiun, shiau, 蕭國濬
• Other Authors: Shu-Ming,Tseng
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/77170985239996814402

碩士 === 國立臺北科技大學 === 電腦通訊與控制研究所 === 91 === Recently, a wireless communication architecture known as Vertical BLAST (Bell Laboratories layered Space-Time) or V-BLAST could achieve high spectral efficiency by using multiple transmit and receive antennas. Unfortunately, the channel estimation error results in the poor performance in a V-BLAST system. A modified nulling vector which minimizes the power of various terms generated by the channel estimation errors has been also proposed. However, it still assumes that the channels are fixed during a data block (quasi-static). In this paper, we use Kalman filter to estimate the time-varying channel coefficients within a data block and perform the V-BLAST nulling and modified nulling. We consider the channel-variation in a data block, which is more practical environment. Via simulations, we show the performance improvement of the proposed system.