Patent ID: 8428177

Claim:
A base station including a multiple antenna array for wireless communication, comprising: a codebook; a processor configured to select a codeword from the codebook and to code data with the selected codeword; and a transmitter configured to transmit the coded data, wherein codewords in the codebook are based on values shown in the following table: V8(:, CMI, 3) = [c1, c2, . . . c8]; CMI c1 c2 c3 c4 c5 c6 c7 c8 1 0.3536 −0.3051 − 0.1732 + 0.0062 − −0.1839 + 0.3112 − −0.3533 − 0.2987 + 0.1786i 0.3082i 0.3535i 0.3020i 0.1677i 0.0124i 0.1892i 2 0.3536 −0.2514 − 0.0041 + 0.2456 − −0.3535 + 0.2571 + −0.0123 − −0.2397 + 0.2486i 0.3535i 0.2543i 0.0082i 0.2427i 0.3533i 0.2599i 3 0.3536 −0.1697 − −0.1907 + 0.3527 + −0.1479 − −0.2107 + 0.3502 + −0.1254 − 0.3102i 0.2977i 0.0244i 0.3211i 0.2839i 0.0486i 0.3306i 4 0.3536 −0.0614 − −0.3322 + 0.1768 + 0.2708 − −0.2709 − −0.1767 + 0.3323 + 0.3482i 0.1210i 0.3062i 0.2273i 0.2272i 0.3062i 0.1208i 5 0.3536 0.0638 − −0.3306 − −0.1830 + 0.2646 + 0.2784 − −0.1642 − −0.3376 + 0.3478i 0.1254i 0.3025i 0.2345i 0.2180i 0.3131i 0.1050i 6 0.3536 0.1881 − −0.1534 − −0.3513 − −0.2204 + 0.1168 + 0.3447 + 0.2499 − 0.2994i 0.3185i 0.0395i 0.2764i 0.3337i 0.0786i 0.2501i 7 0.3536 0.2892 − 0.1196 − −0.0936 − −0.2727 − −0.3525 − −0.3040 + −0.1449 + 0.2034i 0.3327i 0.3409i 0.2251i 0.0272i 0.1805i 0.3225i 8 0.3536 0.3461 − 0.3241 − 0.2885 − 0.2407 − 0.1828 − 0.1172 − 0.0467 − 0.0721i 0.1412i 0.2044i 0.2590i 0.3026i 0.3336i 0.3505i 9 0.3536 0.3461 + 0.3241 + 0.2885 + 0.2407 + 0.1828 + 0.1172 + 0.0467 − 0.0721i 0.1412i 0.2044i 0.2590i 0.3026i 0.3336i 0.3505i 10 0.3536 0.2892 + 0.1196 + −0.0936 + −0.2727 + −0.3525 + −0.3040 − −0.1449 − 0.2034i 0.3327i 0.3409i 0.2251i 0.0272i 0.1805i 0.3225i 11 0.3536 0.1881 + −0.1534 + −0.513 + −0.2204 − 0.1168 − 0.3447 − 0.2499 + 0.2994i 0.3185i 0.0395i 0.2764i 0.3337i 0.0786i 0.2501i 12 0.3536 0.0638 + −0.3306 + −0.1830 − 0.2646 − 0.2784 + −0.1642 + −0.3376 − 0.3478i 0.1254i 0.3025i 0.2345i 0.2180i 0.3131i 0.1050i 13 0.3536 −0.0614 + −0.3322 − 0.1768 − 0.2708 + −0.2709 + −0.1767 − 0.3323 − 0.3482i 0.1210i 0.3062i 0.2273i 0.2272i 0.3062i 0.1208i 14 0.3536 −0.1697 + −0.1907 − 0.3527 − −0.1479 + −0.2107 − 0.3502 − −0.1254 + 0.3102i 0.2977i 0.0244i 0.3211i 0.2839i 0.0486i 0.3306i 15 0.3536 −0.2514 + 0.0041 − 0.2456 + −0.3535 − 0.2571 − −0.0123 + −0.2397 − 0.2486i 0.3535i 0.2543i 0.0082i 0.2427i 0.3533i 0.2599i 16 0.3536 −0.3051 + 0.1732 − 0.0062 + −0.1839 − 0.3112 + −0.3533 + 0.2987 − 0.1786i 0.3082i 0.3535i 0.3020i 0.1677i 0.0124i 0.1892i where each row represents a Codebook Matrix Index (CMI) and each column (c1˜c8) represents an antenna in the multiple antenna array.