New method of pilot arrangement for SC-FDE systems

This paper proposes a new method of pilot arrangement for channel estimation in Single-Carrier modulation with Frequency Domain Equalization (SC-FDE) systems, and analyzes its performance. The new method, which is based on Hadamard transform and interleaver, can eliminate cross interference between pilot and data part in severe multipath environment, and can achieve accurate channel parameters easily. Theoretical analyses and simulation results show that this scheme with low overhead and low implementation complexity has good performance in channel estimation, and it is suitable for mobile transmission with high spectrum efficiency even in time-varying multipath channel.