| 摘要 |
<p>A communications system comprising a plurality of directional signal propagation means, each defining a cell, said cells being arranged as a plurality of rows (R1 to R12), each row comprising repeating sequences of four propagation means transmitting first, second, third and fourth signals (A, B, C, D), respectively, wherein the sequences in successive pairs of contiguous rows (R1, R2, etc.) are offset by one cell, and wherein diagonally arranged pairs of said propagation means in pairs of contiguous rows transmit the same signal.</p> |
