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In this paper, an efficient encoding scheme for dual-diagonal structured LDPC codes is proposed. Our encoding algorithm employs parity bit prediction and correction to break up the data dependency within the encoding process. The encoder can achieve higher level of parallelism and better hardware utilization. The number of required clock cycles for encoding one codeword can be reduced to achieve higher...
In this paper, we present a flexible high-throughput LDPC decoder architecture that can support different code rates and block sizes in wireless applications such as IEEE 802.11n, IEEE 802.16e, and IEEE 802.15.3c standards. Several flexible LDPC decoders have been presented in the literature but their throughput (less than 640 Mbps) is limited due to block-serial scheduling of the decoding computations...
We describe a fully reconfigurable low-density parity check (LDPC) decoder for quasi-cyclic (QC) codes. The proposed hardware architecture is able to decode virtually any QC-LDPC code that fits into the allocated memories while achieving high decoding throughput. Our VLSI implementation has been optimized for the IEEE 802.11 n standard and achieves a throughput of 780 Mbit/s with a core area of 3...
The continuously increasing number of communication standards to be supported in nomadic devices combined with the fast ramping design cost in deep submicron technologies claim for highly reusable and flexible programmable solutions. Software defined radio (SDR) aims at providing such solutions in radio baseband architectures. Great advances were recently booked in handset-targeted SDR, covering most...
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