Advanced coding schemes for a multiband OFDM ultrawideband system towards 1 Gbps

Abstract

Advanced coding schemes such as parallel concatenated zigzag (PCZZ) and LDPC codes are shown to provide performance close to turbo codes. In this paper we propose PCZZ and structured LDPC coding for an MB-OFDM UWB system with 16-QAM modulation aiming at increasing the data rate of the current system up to 1 Gbps. We evaluate the performance of the PCZZ and LDPC coding schemes in such a system. In particular, it is shown that the PCZZ and LDPC codes provide 3-4 dB gain in packet error rate compared to convolutional codes. We also address the link budget and achievable ranges for such a system with different coding rates. The proposed PCZZ and structured LDPC codes may be considered as a potential channel coding scheme for the future Multiband OFDM UWB systems providing data rates up to 1 Gbps or higher.