Iterative Joint Channel Estimation and Signal Detection in MIMO OFDM Systems
In MIMO OFDM communication systems, perfect channel estimation is required for the coherent demodulation. In conventional space time processing algorithms, signal detection is always performed after the channel estimation process is finished. When channel estimation error exists, the performance of signal detection will degrade greatly. In this paper, we propose an iterative signal detection algorithm which can jointly performs the channel estimation. Compared with conventional channel estimation and signal detection approaches, this algorithm can improve the channel estimate accuracy and therefore enhance the signal detection performance. In our work, the algorithm is employed in both space time coded and V-BLAST structured MIMO-OFDM systems. Simulation results and analyses show that this kind of joint estimation and detection strategy is more bandwidth efficient and can significantly improve the system performance under fast fading multi-path channels.1
Bowei Song Wenjun Zhang Lin Gui
Institute of Image Communication and Information Processing Shanghai Jiao Tong University Shanghai, China
国际会议
武汉
英文
39-43
2005-09-23（万方平台首次上网日期，不代表论文的发表时间）