A tight upper bound on the bit error probability of convolutionally encoded spread spectrum communication over frequency-selective Rayleigh-fading channels is derived. It is shown that combining coding and multipath propagation leads to a multiplication of time and multipath diversity. The main di erence between the two types of diversity is that in contrast to time diversity the multipath dive...

Abstract This study investigates the impact of boardroom diversity (BD) on firms’ financial performance (FP), drawing economic and resource dependency theory. The further explores influence strategic change (SC) this nexus, using a six-dimensional index to measurse BD SC. A dataset 240 non-financial firms listed four stock exchanges (Moscow, Shanghai, Bombay, Pakistan) over 13-year period (2008...