Per-Survivor Processing Viterbi Decoder for Bluetooth Applications
S. Au, Shahriar Mirabbasi, Lutz Lampe, Robert Schober · 2006
Recently, a new noncoherent sequence detection receiver for Bluetooth systems has been developed. The receiver is based on Rimoldi's decomposition of the Bluetooth transmit signal and its power efficiency was shown by software simulations. In this paper, a hardware implementation of the decoder for this receiver is presented. In particular, we describe a low-complexity Viterbi decoder that performs noncoherent sequence detection in a two-state trellis using per-survivor processing. The prototype decoder is implemented in a field programmable gate array (FPGA). The bit-error-rate performance of the implemented decoder is compared with that of the reference software simulations.