Iterative data detection and pilot symbol assisted-channel estimation for single-parity check-product coded multiple antennas system

摘要

Maximum a posteriori (MAP) based iterative data detection and pilot symbol assisted channel estimation of the single parity check product coded multiple antenna wireless communication system is discussed. In iterative data-detection and channel-estimation algorithms, the channel estimator and the data detector recursively exchange the information order to improve the system performance. The work in this paper uses the single-parity-check code (SPC) as component code, parallel concatenated, of product code (PC). The SPC-PC codes are high-rate codes when reasonable block lengths are used. They are simple in both encoding and decoding, and are shown to produce good performance while decoded iteratively. By taking the output of the SPC-PC encoder into two defined-interleavers and transmitting through multiple transmit antennas, will provide space and time diversity in the system. This scheme would be BLAST-like system. Pilot-symbol aided channel estimation is used to measure the channel impulse response. Following the iteration of the decoding process, the channel impulse response will be updated by employing the extrinsic information output of the decoder. The convergence of this channel impulse response update will investigate.