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To achieve spatial diversity and improve the average bit error probability (ABEP) of Generalized Space Shift Keying (GSSK) in Multiple-Input and Multiple-Output (MIMO) channels with low feedback overhead and computational complexity, we propose a three-step adaptive precoding strategy for single-user GSSK (SU-GSSK) transmission by exploiting the channel state information at the transmitter (CSIT)...
The coexistence of a macrocell and a number of femtocells often leads to a two-tier heterogeneous network, where the co-tier interference (CotIN) and cross-tier interference (CrotIN) both degrade users' quality of service. In order to mitigate the two types of interferences, we propose a precoding scheme for the cooperative femtocells, called CotIN elimination and CrotIN suppression (CECRS) precoding...
The K-best detection algorithm with its diverse variations, which belong to a typical breadth-first type of quasi maximum-likelihood (ML) detection algorithms, have been close to implementation in realistic communications systems for its excellent bit error rate (BER) performance with reasonable computational complexity. However, when high-order modulation schemes are employed, the complexity for...
This paper presents a transmitting scheme and corresponding user selection algorithms for simultaneous unicast and multicast services. On the subcarriers assigned to multicast services, BS transmits the superposition of unicast and multicast signals. Block diagonalization (BD) and power control are applied to unicast signal, to make sure interference from unicast not reduce the rate of multicast signal...
As the number of transmit/receive antennas gets large in wireless communication systems, the drastically-increasing complexity in MIMO detection imposes significant challenges in implementing green communications while achieving high spectral efficiency. The winner-path-extension (WPE) K-best algorithm is an efficient detection algorithm in uncoded MIMO systems, known for its stable throughput and...
Traditional equalization algorithms for multiple input multiple output (MIMO) systems suffer from high complexity and low convergence rate. So it's necessary to develop an equalization algorithm to minimize the computational complexity and improve the convergence rate. This paper presents a new adaptive reduced-rank linear equalization algorithm, called rectangle unitary multistage Wiener filter reduced-rank...
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