Multigigabit RS-CC decoder for 60-GHz systems

With ultra-wide unlicensed spectrum, 60-GHz communication system has become a key candidate to achieve multigigabit throughput in short distance. This paper proposes a novel multigigabit Reed-Solomon (RS) convolutional codes (CC) decoder architecture for 60-GHz systems. In the proposed architecture, the RS and the CC codes are used as outer codes and inner codes, respectively. For RS decoder, the circuit for reformulated inversionless Berlekamp-Massey (RIBM) algorithm is proposed via double-clock methods to improve the decoding speed. For CC decoder, we adopt a balanced add-select-register-compare Viterbi decoder architecture, which breaks the decoding-speed bottleneck in traditional Viterbi decoders. The proposed RS-CC decoder has been implemented and demonstrated in a Xilinx Virtex-6 FPGA device.