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Line 7: ==Mathematical description== In a multiple antenna downlink system which comprises aan <math>N_t</math> transmit antenna access point (AP) and <math>K</math> single receive antenna users, the received signal of user <math>k</math> is described as :<math>y_k = \mathbf{h}_k^T\mathbf{x}+n_k, \quad k=1,2, \ldots, K</math>

Zero-forcing precoding: Difference between revisions