TY - GEN
T1 - Memory efficient LDPC code design for high throughput software defined radio (SDR) systems
AU - Zhu, Yuming
AU - Chakrabarti, Chaitali
PY - 2007
Y1 - 2007
N2 - Low-Density Parity-Check (LDPC) codes have been adopted in the physical layer protocol of many communication systems because of their superior performance. A direct implementation of the LDPC decoder on an existing platform, such as a software defined radio (SDR), is likely to be inefficient. Our approach is to design the LDPC code in a way that takes into account the constraints imposed by the existing architecture, without compromising the communication performance. In this paper, a procedure for architecture-aware LDPC code design which minimize the number of global memory accesses in a memory constrained system is derived. The procedure is built on top of existing super-code based LDPC code design. The proposed code construction procedure also results in reduction in the number of iterations and thereby increases the throughput significantly.
AB - Low-Density Parity-Check (LDPC) codes have been adopted in the physical layer protocol of many communication systems because of their superior performance. A direct implementation of the LDPC decoder on an existing platform, such as a software defined radio (SDR), is likely to be inefficient. Our approach is to design the LDPC code in a way that takes into account the constraints imposed by the existing architecture, without compromising the communication performance. In this paper, a procedure for architecture-aware LDPC code design which minimize the number of global memory accesses in a memory constrained system is derived. The procedure is built on top of existing super-code based LDPC code design. The proposed code construction procedure also results in reduction in the number of iterations and thereby increases the throughput significantly.
KW - Channel coding
KW - Computer architecture
KW - Memory access
KW - Throughput (communication systems)
UR - http://www.scopus.com/inward/record.url?scp=34547532797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547532797&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2007.366159
DO - 10.1109/ICASSP.2007.366159
M3 - Conference contribution
AN - SCOPUS:34547532797
SN - 1424407281
SN - 9781424407286
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - II9-II12
BT - 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
T2 - 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
Y2 - 15 April 2007 through 20 April 2007
ER -