Blind and Non-Blind Turbo Estimation for Fast Fading GSM Channels
| Authors: | K.-D. Kammeyer, V. Kühn, T. Petermann |
| Abstract: | Wireless communication systems such as GSM (Global System for Mobile communications) are playing a growing role for data transmission. In order to ensure a reliable transmission, the channel impulse response has to be estimated accurately. This is a difficult task particularly for fast fading channels caused by high-speed mobile units. In this paper, we deal with the application of non-blind and blind channel estimation approaches to identify the full rate data Traffic CHannel (TCH/F9.6) of GSM. We present a new iterative channel estimation scheme leading to a significant performance improvement especially for high speed propagations with Doppler frequencies up to $500\Hz$. Furthermore, it is shown that blind channel estimation schemes could be as efficient as non-blind methods when regarding bit error rates (BERs) after channel decoding in terms of the $\EbNo$ ratio. Moreover, a solution for the scalar ambiguity inherent in all blind estimation approaches is suggested. |
| Document type: | Journal Paper |
| Publication: | September 2001 |
| Journal: | IEEE Journal on Selected Areas in Communications |
| Pages: | 1718-1728 |
| Volume: | 19 |
| Number: | 9 |
| Index: | 163 |
| Files: | BibTEX |
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