Abstract
As the channel frequency selectivity becomes severer, the bit error rate (BER) performance of direct sequence spread spectrum (DSSS) with rake combining degrades due to increasing inter-path interference. Frequency-domain equalization (FDE) can replace rake combining with much improved BER performance in a severe frequency-selective fading channel. For FDE, accurate estimation of the channel transfer function is required. In this paper, we propose a pilot-assisted iterative channel estimation that uses a pilot which is time-multiplexed within each chip block for fast Fourier transform (FFT). The pilot acts as a cyclic-prefix of FFT block as well The achievable BER performance is evaluated by computer simulation.
Original language | English |
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Pages (from-to) | 783-787 |
Number of pages | 5 |
Journal | IEEE Vehicular Technology Conference |
Volume | 61 |
Issue number | 2 |
Publication status | Published - 2005 |
Event | 2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden Duration: 2005 May 30 → 2005 Jun 1 |
Keywords
- Channel estimation
- DSSS
- Frequency-domain equalization