... z1 , z2 , , z M /2 ] (25 ) The joint Gaussian distribution of z BPSM conditioned on smn,BPSM is expressed as: p(z BPSM | smn,BPSM) = 2 2 − M /2 e ( z m − Eb,BPSM )2 2 2 M ∏e z2 − 2 i2 (26 ) i ... Systems ET Docket 98-153, FCC 02- 48; Released: April 22 , 20 02 30 Novel Applications of the UWB Technologies Fisher, R.; et al (20 05) DS -UWB Physical Layer Submission to 8 02. 15 Task Group 3a, IEEE standard ... number of users in the system MAI is the sum of interference of one user from all the other users When all the users use the same set of orthogonal pulses MAI is the sum of expectation of the product...