A system for analyzing compatibility of access terminals (121, 122, 123, 124, 125) for simultaneous communication, said system comprising: a compatibility coefficient calculator accepting first array response vector information associated with a first access terminal and second array response vector information associated with a second access terminal input and providing a first compatibility coefficient result as a function of an absolute value of a product of the first array response vector information and a conjugate of the second array response vector information, wherein said first array response vector information comprises information with respect to a signal of said first access terminal as provided to an antenna array of the first access terminal and said second array response information comprises information with respect to a signal of said second access terminal as provided to an antenna array of the second access terminal and wherein each of the first array response vector information and the second array response vector information comprises an M by 1 complex vector, where M corresponds to a number of antenna elements or antenna element columns of the antenna array of the respective access terminal; a reference coefficient calculator accepting the first array response vector information input and providing a first reference coefficient result as a function of an absolute value of a product of the first array response vector information and a conjugate of the first array response vector information; and a comparitor accepting information with respect to said first compatibility coefficient result and information with respect to said first reference coefficient result input and comparing said information with respect to said first compatibility coefficient result and said information with respect to said first reference coefficient result to determine compatibility of said second access terminal to said first access terminal, wherein comparison of said information with respect to said first compatibility coefficient result and information with respect to said first reference coefficient result to determine compatibility utilizes a predetermined threshold, and wherein a compatibility indicator is set to be true if the absolute value of the product of the first array response vector information and the conjugate of the second array response vector information is less than a product of the predetermined threshold and the absolute value of the product of the first array response vector information and the conjugate of the first array response vector information. a compatibility coefficient calculator accepting first array response vector information associated with a first access terminal and second array response vector information associated with a second access terminal input and providing a first compatibility coefficient result as a function of an absolute value of a product of the first array response vector information and a conjugate of the second array response vector information, wherein said first array response vector information comprises information with respect to a signal of said first access terminal as provided to an antenna array of the first access terminal and said second array response information comprises information with respect to a signal of said second access terminal as provided to an antenna array of the second access terminal and wherein each of the first array response vector information and the second array response vector information comprises an M by 1 complex vector, where M corresponds to a number of antenna elements or antenna element columns of the antenna array of the respective access terminal; a reference coefficient calculator accepting the first array response vector information input and providing a first reference coefficient result as a function of an absolute value of a product of the first array response vector information and a conjugate of the first array response vector information; and a comparitor accepting information with respect to said first compatibility coefficient result and information with respect to said first reference coefficient result input and comparing said information with respect to said first compatibility coefficient result and said information with respect to said first reference coefficient result to determine compatibility of said second access terminal to said first access terminal, wherein comparison of said information with respect to said first compatibility coefficient result and information with respect to said first reference coefficient result to determine compatibility utilizes a predetermined threshold, and wherein a compatibility indicator is set to be true if the absolute value of the product of the first array response vector information and the conjugate of the second array response vector information is less than a product of the predetermined threshold and the absolute value of the product of the first array response vector information and the conjugate of the first array response vector information.