Abstract
Vector orthogonal frequency division multiplexing (OFDM) is a promising modulation scheme, which allows for a flexible configuration and connects OFDM and single-carrier frequency domain equalization in a unified framework. In this letter, we design Alamouti-like space-time block coded and space-frequency block coded vector OFDM systems. Based on these schemes, we prove that, with two transmit and one receive antenna, the diversity order of the zero-forcing receiver is fixed to 2 over frequency selective fading channels, while that of the minimum mean square error receiver depends on the channel memory length, the vector block size, and the spectral efficiency.
Original language | English |
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Pages (from-to) | 204-207 |
Number of pages | 4 |
Journal | IEEE Communications Letters |
Volume | 21 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- Vector OFDM
- space-time block coding (STBC)
- space-frequency block coding (SFBC)
- diversity order