Blind symbol detection for multiple-input multiple-output systems via particle filtering

A novel blind symbol detection algorithm is proposed for time-selective fading multiple-input-multiple-output (MIMO) systems, whose every channel is described as a second-order autoregressive (AR) model. This algorithm employs the particle filter as the demodulator stage in turbo receivers because the particle filter has the natural characteristics of soft-input soft-output. Moreover, the particle filter has the advantage of parallel computation. Computer simulation results demonstrate the performance of the proposed algorithm.