摘要
A semi-blind channel estimation algorithm based on subspace approach for orthogonal frequency division multiplexing (OFDM) systems over the frequency-selective channel is proposed. A linear precoding is applied on each block before the IFFT operation and a low-rank structure is created in the received signal. Then subspace properties can be exploited to identify the channel up to a scalar ambiguity. The residual scalar ambiguities eliminated by inserting pilots into data stream. Simulation results illustrate the performance of the proposed semi-blind algorithm.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 320-322 |
| 页数 | 3 |
| 期刊 | Journal of Beijing Institute of Technology (English Edition) |
| 卷 | 15 |
| 期 | 3 |
| 出版状态 | 已出版 - 9月 2006 |