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2006
IEEE

Linear Dispersion for Single-Carrier Communications in Frequency Selective Channels

8 years 9 months ago
Linear Dispersion for Single-Carrier Communications in Frequency Selective Channels
Abstract— Linear dispersion coded orthogonal frequency division multiplexing (LDC-OFDM) has recently been proposed to improve joint frequency and time diversity. This paper investigates whether LDC are able to support joint frequency and time diversity for single-carrier block communications in timevarying frequency selective fading channels, and proposes linear dispersion coded cyclic-prefix single-carrier modulation (LDCCP-SCM), which utilizes LDC across multiple CP-SCM blocks. LDC-CP-SCM uses a layered two-stage LDC decoding strategy, and is thus backwards-compatible to CP-SCM systems. This paper analyzes the diversity properties of LDC-CP-SCM, and provides a sufficient condition for LDC-CP-SCM to maximize all available joint frequency and time diversity gain and coding gain. For the LDC considered, simulations show that with and without carrier frequency offset (CFO) effects, LDC-CP-SCM may outperform both CP-SCM and LDC-CP-OFDM in timevarying frequency selective channels. This...
Jinsong Wu, Steven D. Blostein
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where VTC
Authors Jinsong Wu, Steven D. Blostein
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