US 7,590,045 B2
Apparatus and method for transmitting fast feedback information in a wireless communication system
Jeong-Tae Oh, Yongin-si (Korea, Republic of); Won-Il Roh, Yongin-si (Korea, Republic of); Kyun-Byoung Ko, Hwaseong-si (Korea, Republic of); Jae-Ho Jeon, Seongnam-si (Korea, Republic of); Seung-Joo Maeng, Seongnam-si (Korea, Republic of); Chan-Byoung Chae, Seoul (Korea, Republic of); Hong-Sil Jeong, Suwon-si (Korea, Republic of); Sung-Ryul Yun, Suwon-si (Korea, Republic of); and Myung-Kwang Byun, Suwon-si (Korea, Republic of)
Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of)
Filed on Jan. 11, 2006, as Appl. No. 11/329,615.
Claims priority of application No. 10-2005-0002700 (KR), filed on Jan. 11, 2005; and application No. 10-2005-0048138 (KR), filed on Jun. 04, 2005.
Prior Publication US 2006/0176803 A1, Aug. 10, 2006
Int. Cl. H04J 11/00 (2006.01)
U.S. Cl. 370—210  [370/208; 370/209; 375/259] 12 Claims
OG exemplary drawing
 
1. An apparatus for transmitting uplink fast feedback information in a wireless communication system, the apparatus comprising:
a channel encoder for inputting uplink fast feedback information to transmit, and outputting 3-bit codewords being set according to the fast feedback information;
a noncoherent modulator for modulating transmission symbols corresponding to the codewords using a noncoherent modulation scheme; and
an inverse fast Fourier transform (IFFT) unit for generating a transmission signal comprised of subcarrier bundles by IFFT-processing the modulated transmission symbols before transmission,
wherein the 3-bit codewords are represented as 3-bit payloads as follows:
   
    Fast Feedback Vector Index per Tile
    Even = {tile (0), tile (2), tile (4)},
  3 bit payload Odd = {tile (1), tile (3), tile (5)}
   
  0b000 0, 0, 0
  0b001 1, 1, 1
  0b010 2, 2, 2
  0b011 3, 3, 3
  0b100 4, 4, 4
  0b101 5, 5, 5
  0b110 6, 6, 6
  0b111 7, 7, 7
   
wherein the fast feedback vector index is represented as a vector index as follows:
   
    Subcarrier modulation per codeword
  VECTOR INDEX subcarrier 0, subcarrier 1, . . . , subcarrier 7
   
  0 P0, P1, P2, P3, P0, P1, P2, P3
  1 P0, P3, P2, P1, P0, P3, P2, P1
  2 P0, P0, P1, P1, P2, P2, P3, P3
  3 P0, P0, P3, P3, P2, P2, P1, P1
  4 P0, P0, P0, P0, P0, P0, P0, P0
  5 P0, P2, P0, P2, P0, P2, P0, P2
  6 P0, P2, P0, P2, P2, P0, P2, P0
  7 P0, P2, P2, P0, P2, P0, P0, P2
   
and wherein orthogonal vectors P0, P1, P2 and P3, each of which indicates a Quadrature Phase Shift Keying (QPSK) modulation symbol, can be expressed by:

OG Complex Work Unit Drawing