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With the introduction of a dither sequence and scaling factors, dithered Tomlinson-Harashima precoding (THP) has shown to outperform conventional spatial THP in multi-user MIMO systems. Through a careful analysis of dithered THP, this paper exhibits that it is not only possible, but also beneficial, to eliminate the dither sequence and develop efficient scale-only THP, and the key is to resolve the...
This paper investigates the adaptive ARQ method for turbo coded communication systems in the fast deep fading environment. Different from the traditional ARQ method, this approach provides various throughput for different quality of service (QoS) in the transportation communications. Based on the typical phenomena observed in the turbo coded communication systems under fast deep fading channels, we...
Differential unitary space-time modulation (DUSTM) is well established for high data rate communications in the multi-antennas channel without channel state information (CSI). To achieve the channel capacity, a new scheme, which employs the turbo-trellis coded modulation (TTCM) and DUSTM, is proposed in this paper. Simulation results reveal that in the TTCM-DUSTM scheme, around 12 dB coding gain is...
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