Proposal of an iterative channel information estimation scheme on multi-hop networks
Kouji Ohuchi, Tadahiro Wada, Hiraku Okada, Masato Saito · 2007
In this paper, a new channel information estimation scheme for multi-route multi-hop networks is discussed. Multi-hop network has received much attention recent years because of its large channel capacity. When the information bit streams are transmitted over multiple routes, a route diversity effect would also be possible. In order to improve the route diversity effect the receiver has to obtain the channel information for each route. Therefore we have to consider how to obtain the channel information over the multi-route multi-hop networks. The proposed scheme exploits the number of error-corrected bits in the decoding process to estimate the channel information. In this paper, the bit error rate (BER) performance of the proposed scheme is investigated by computer simulations. As the result, the proposed scheme has a better BER performance than the conventional one which uses parity check bits to obtain the channel information. The advantage of the proposed scheme is maintained even if the route conditions is nonuniform.