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Probabilistic Data Association (PDA) algorithm has shown promising performance in symbol detection and interference cancellation in different communication schemes. This paper proposes new algorithms that build on PDA and introduce modifications in the way the symbol being detected is treated. While PDA models this symbol as a discrete sample from a constellation, PDA with symbol uncertainty (SU-PDA)...
Filter Bank Multicarrier (FBMC) systems has drawn interest as an alternative to orthogonal frequency division multiplexing (OFDM), as FBMC offers higher spectral efficiency and less susceptibility to synchronization errors. One drawback in FBMC systems is the presence of inter-carrier-interference (ICI) and inter-symbol-interference (ISI), which degrades the system performance when operating under...
The LTE specification provides a framework for increased capacity, improved spectrum efficiency, improved coverage, reduced cost per bit for the operator, and reduced latency compared with previous wireless implementations. The 3GPP LTE system should support instantaneous downlink and uplink peak data rates of 100Mb/s and 50Mb/s within 20 MHz downlink and uplink spectrum allocations, respectively...
This paper proposes a preprocessor for femtocell base stations to avoid the downlink interference to the macro users, where both systems are multicarrier systems. By using the concept of cognitive radio, we design a low complexity transmitter including a precoder followed by a power allocation. With the judicious design of the interference tolerant constraints, the performance degradation of the macro...
Considering the problem of feedback cost and performance loss for precoded spatial multiplexing with limited feedback, an novel nonlinear detection method based on perturbation codebook with limited feedback for precoded vblast is proposed, the corresponding criteria is used for select optimal codeword from the Grassmannian codebook at the receiving according to the channel state information, selecting...
Recently, the network coding which permitting relay node make a properly process for the received multiple information and forward to multiple nodes has attracted a great deal of concerns. The MIMO two way relay network coding could divided into two phases: in the first phase, the two sources separately use the preceding design method which based on the lattice basis reduction to precede the transmitted...
In Multi-user, Multiple-Input, Multiple-Output (MU-MIMO) wireless cellular where Quality of Service (QoS) is interference-limited, a variety of power control, precoding and decoding non-linear problems exist. Even though the sum capacity of centralized schemes (either at transmission or reception) has already been computed, the search for efficient practical schemes which can achieve this capacity...
In this paper, we present a novel multi-carrier spread spectrum (MCSS) system which uses Parallel Sequence Spread Spectrum (PSSS) as its spreading transform. This technique called PSSS-OFDM, allows flexible control over the amount of spreading to provide a variable rate link at minimal complexity gain over standard OFDM, requiring only a simple correlator before the IFFT block. Using a single-tap...
The different propagation times due to the distinct distance between the BSs and MSs result in inter-cell asynchronous interference, which severely destroy system performance. How to mitigate inter-cell asynchronous interference by making use of SLNR precoding is the key to this paper. Firstly, a framework of Cooperative Base Station Systems (Co-BS) was developed and the delay between the cells was...
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