TY - GEN
T1 - Bit rearrangement for MIMO retransmissions
AU - Sung, Ho Moon
AU - Hyung, Ho Park
AU - Goldsmith, Andrea
AU - Minseok, Oh
PY - 2007
Y1 - 2007
N2 - In this paper, we propose a new hybrid automatic repeat request (H-ARQ) scheme in MIMO. The proposed scheme performs bit-level exchanges and modifications every retransmission and covers all combinations of number of antennas and number of retransmissions in M-QAM. In order to obtain a better bitwise mapping scheme, we define two independent bitwise suboperations, which are called bit swapping and inversion (BSI) and bit shifting between antennas (BSA), and derive sets for BSI and BSA. The performance of the proposed scheme is evaluated through link simulations with a 3GPP long-term evolution (LTE) specification and is compared to previous H-ARQ schemes in MIMO. The results show that the proposed bitwise mapping scheme provides approximately 2 dB gain over the conventional scheme even at a high mobile speed.
AB - In this paper, we propose a new hybrid automatic repeat request (H-ARQ) scheme in MIMO. The proposed scheme performs bit-level exchanges and modifications every retransmission and covers all combinations of number of antennas and number of retransmissions in M-QAM. In order to obtain a better bitwise mapping scheme, we define two independent bitwise suboperations, which are called bit swapping and inversion (BSI) and bit shifting between antennas (BSA), and derive sets for BSI and BSA. The performance of the proposed scheme is evaluated through link simulations with a 3GPP long-term evolution (LTE) specification and is compared to previous H-ARQ schemes in MIMO. The results show that the proposed bitwise mapping scheme provides approximately 2 dB gain over the conventional scheme even at a high mobile speed.
UR - https://www.scopus.com/pages/publications/39349105583
U2 - 10.1109/GLOCOM.2007.666
DO - 10.1109/GLOCOM.2007.666
M3 - Conference contribution
AN - SCOPUS:39349105583
SN - 1424410436
SN - 9781424410439
T3 - GLOBECOM - IEEE Global Telecommunications Conference
SP - 3509
EP - 3513
BT - IEEE GLOBECOM 2007 - 2007 IEEE Global Telecommunications Conference, Proceedings
T2 - 50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
Y2 - 26 November 2007 through 30 November 2007
ER -