Title :
A novel high spectral efficiency waveform coding-OVFDM
Author_Institution :
Sch. of Inf. & Commun., Beijing Univ. of Posts & Telecomm, Beijing, China
Abstract :
Based on the Overlapped Multiplexing Principle, a frequency domain OVFDM (Overlapped Frequency Domain Multiplexing) Coding is proposed. By the data weighted shift overlapped version of any band-limited Multiplexing Transfer Function H(f) the coding gain and spectral efficiency are both achieved. The heavier the overlap of the data weighted Multiplexing Transfer Function H(f), the higher the coding gain and spectral efficiency as well as the closer the output to the optimum complex Gaussian distribution. The bit error probability performance is estimated. The time domain OVTDM (Overlapped Time Domain Multiplexing) Coding, the dual of OVFDM in time domain is incidentally proposed as well. Both theoretical analysis and testified simulations show that OVFDM (OVTDM) is suitable for high spectral efficiency application and its spectral efficiency is only roughly linear to SNR rather than the well-known logarithm to SNR.
Keywords :
Gaussian distribution; OFDM modulation; error statistics; frequency-domain analysis; transfer functions; bit error probability; coding gain; complex Gaussian distribution; data weighted shift overlapped version; frequency domain OVFDM; high spectral efficiency waveform coding; multiplexing transfer function; overlapped frequency domain multiplexing; overlapped multiplexing principle; Channel coding; Frequency-domain analysis; Gaussian distribution; Multiplexing; Signal to noise ratio; Time-domain analysis; OVFDM; OVTDM; dual relation; frequency domain coding; overlapped multiplexing principle; shannon capacity; spectral efficiency; waveform coding;
Journal_Title :
Communications, China
DOI :
10.1109/CC.2015.7084402
