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CMA adaptive array antenna under weight norm constraint

The constant modulus algorithm (CMA) adaptive array was developed to capture the desired constant envelope signals such as FM, PSK and FSK signals. For controlling the level of output noise power of the CMA system, we introduce the norm constraint of the array weight into the CMA. The constrained CMA operates to suppress the output power of the internal noise while maintaining the desired signal at the array output. As a result, it is expected that one can obtain a higher signal to interference plus noise ratio (SINR). We examine the performance of the CMA adaptive array under the weight norm constraint in the presence of multipath waves, and validate the constraint in the CMA.