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For differential space-time block coding (DSTBC), this paper proposes a simple decision-feedback block differential detection (DFBDD) scheme with small computational complexity, in order to improve tracking capability on fast time-varying fading channels. Decisions can be derived directly without computation of metrics in the proposed DFBDD. It can also employ higher-order channel prediction, which...
SC-OFDM (single carrier orthogonal frequency division multiplexing) has received considerable attention in recent years due to its low peak power and robust performance against multipath fading channels. There are emerging demands in a variety of wireless communication systems to transmit multiple SC-OFDM signals in different channels to improve bandwidth efficiency. However, the peak power of such...
This paper proposes an ultra accurate inter-node carrier frequency synchronization which keeps carrier frequency offset between wireless nodes less than 1Hz in slowly time-varying Rician fading channels. In the proposed method, one of the two nodes adjusts its carrier frequency to be close to the other node's carrier frequency based on bi-directional channel measurements. We demonstrate that the proposed...
This paper proposes an ultra accurate carrier frequency synchronization for OFDMA/TDD systems, which keeps carrier frequency offset between two wireless nodes less than 0.01Hz in frequency-selective Rayleigh fading environments. In the proposed method, bi-directional channels are measured in multiple subbands of an OFDMA system. One of the two nodes corrects its carrier frequency with high accuracy...
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