Error performance of asynchronous DS-CDMA system using maximal ratio combining diversity

The two equivalent closed-form expressions of the bit error rate (BER) are presented for an asynchronous DS-CDMA system using a maximal ratio combinin g diversity over a Rician fading channel. The computational accuracy of the BER estimates evaluated by these expressions is compared and verified thro ugh comparison with a semi-analytical simulation result. It is shown mathem atically that the BER formula, reduced to the ease of the well-known Raylei gh channel, is equivalent to the formula presented previously.