| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable receiving of multi-input/multi-output (a plurality of users). SOLUTION: Each of transmission line impulse response hmn (q) is estimated from M received signals rm (m=1,..., M) and a known signal, numbers N (N of users: 1,..., N), an M×N matrix H (q) with hmn (q) as elements and a Q×Q matrix H with H (q) as elements are found (Q is number of multipaths of respective transmitting waves, q=0,..., Q-1) and a soft decision value b'n (k) is found by decryptionλ2 [bn (k)]. Then, an interference component vector B' (k) is generated by using this decision value, an interference replica H. B' (k) is found, andv ' (k) is found by subtracting this replica from a received vectorv (k). Then, an adaptive filterw n (k) corresponding to an n-th user is found for dividing the remaining interference component inv ' (k) with a least average square error standard by usingv (k) and H and a log-likelihood ratio is obtained as a received signal, from which interference is removed by passingv ' (k) throughw (k), from the n-th user.</p> |
