A Memory Efficient FPGA Implementation of Quasi-Cyclic LDPC Decoder (2009)
Jin Sha, Minglun Gao, Zhongjin Zhang, Li Li, Zhongfeng Wang
Abstract- Low-Density Parity-Check (LDPC) code is one kind of prominent error correcting codes (ECC) being considered in next generation industry standards. The decoder implementation complexity has...
New Sphere Decoding Architecture for MIMO Systems (2008)
Abstract — The sphere decoding algorithm (SDA) has been widely used for maximum likelihood (ML) detection in MIMO systems. However, the conventional SDA is very complex for hardware implementation,...
Area-Efficient High Speed Decoding Schemes For Turbo/map Decoders (2001)
Zhongfeng Wang Zhipei, Zhongfeng Wang, Zhipei Chi, Keshab K. Parhi
Turbo decoders inherently have a large latency and low throughput due to iterative decoding. To increase the throughput and reduce the latency, high speed decoding schemes have to be employed. In...
A Study on the Performance, Power Consumption Tradeoffs of Short Frame Turbo Decoder Design (2001)
Zhipei Chi, Zhongfeng Wang, Keshab K. Parhi
Protecting short frames using turbo coding is a challenging task because of the small interleave size and the need for transmission efficiency. In this paper, we explore possible trade-off between...
On Finite Precision Implementation of Low Density Parity Check Codes Decoder (2001)
Tong Zhang, Zhongfeng Wang, Keshab K. Parhi
In this paper, we analyze the finite precision effects on the decoding performance of Gallager’s low density parity check (LDPC) codes and develop optimal finite word lengths of variables as far as...
High performance,low complexity VLSI design of Turbo decoders / (2000)
Thesis (Ph. D.)--University of Minnesota, 2000.
Efficient Parallel Fir Filter Implementations Using Frequency Spectrum Characteristics (1998)
Jin-Gyun Chung, Yong-bae Kim, Hang-geun Jeong, Keshab K. Parhi, Zhongfeng Wang
Parallel (or block) FIR digital filters can be used either for high-speed or low-power (with reduced supply voltage) applications. Traditional parallel filter implementations cause linear increase in...