Capacity of CDMA fading channels

The key aspects of the fading multi-access model considered in this paper are: synchronous users with common processing gain N; random spreading sequences known at the receiver; slow independent fading, fading amplitudes remaining constant per information symbol and otherwise ergodic, with arbitrary first order distribution; the fading is independent and equally distributed for all transmitters; the realizations of the fading amplitudes are perfectly known at the receiver; additive white Gaussian noise; fixed and arbitrary system load β=K/N, while K,N→∞