Title :
Adaptive Hybrid ARQ schemes with bit-LLR based packet combining through MIMO-OFDM eigen-mode channels
Author :
Ishigami, Hirotake ; Shimotsu, Mayumi ; Iwanami, Yasunori ; Okamoto, Eiji
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol.
Abstract :
In this paper, we consider the hybrid ARQ schemes with the adaptive modulation and the bit-LLR based packet combining through MIMO-OFDM eigen-mode channels for high throughput transmission. We have proposed two types of adaptive modulations using 64QAM, 16QAM and QPSK, those are named as Type-A and Type B, based on the PER and the throughput of each eigen-mode channel, respectively. The Type-I and Type-II Hybrid ARQ schemes with LDPC codes having the rates of 0.8 and 0.5 respectively, have also been investigated
Keywords :
MIMO communication; OFDM modulation; adaptive codes; automatic repeat request; channel coding; eigenvalues and eigenfunctions; parity check codes; quadrature amplitude modulation; quadrature phase shift keying; LDPC codes; MIMO-OFDM eigen-mode channels; QAM; QPSK; adaptive hybrid ARQ scheme; bit-LLR based packet combining; quadrature amplitude modulation; quadrature phase shift keying; Automatic repeat request; Channel capacity; Computer science; MIMO; Matrix decomposition; Modulation coding; OFDM modulation; Parity check codes; Quadrature phase shift keying; Throughput; Hybrid ARQ; LDPC code; MIMO eigen-mode transmission; OFDM; adaptive modulation; packet combining;
Conference_Titel :
TENCON 2006. 2006 IEEE Region 10 Conference
Conference_Location :
Hong Kong
Print_ISBN :
1-4244-0548-3
Electronic_ISBN :
1-4244-0549-1
DOI :
10.1109/TENCON.2006.343832
