A signal design method for block-coded modulation in multipath fading channel

This paper considers the block‐coded modulation system in the multipath fading environment and derives the upper bound expression for the bit error rate considering the effects of the interleaving size and the space diversity. Then a signal design is proposed. Here, the set of signals minimizing the upper bound expression is sought using the quasi‐Newton method, which is known as an iterative solution method for the nonlinear progrmming problem. the bit error rate for the signal sequence derived by the proposed signal design is evaluated by a computer simulation, and the effectiveness of the proposed signal design is demonstrated.