The-Hanh Pham

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Orthogonal frequency division multiplex (OFDM) has been widely used in various wireless communications systems. Thus the detection of OFDM signals is of significant importance in cognitive radio and other spectrum sharing systems. A common feature of OFDM in many popular standards is that some pilot subcarriers repeat periodically after certain OFDM blocks.(More)
In this paper, we consider multi-input multi-output (MIMO) two-way relay networks with orthogonal frequencydivision multiplexing (OFDM) modulation scheme. The networks consist of two end users exchanging their information via a relay. One information exchange between two end users is divided into two Phases. In Phase 1, two users send their information to(More)
In this letter, the problem of training sequence design in a bi-directional relay network is investigated. The two nodes, Tx1 and Tx2, communicate with each other via a relay (RL). The RL receives the signals that are transmitted simultaneously from both nodes and then broadcasts the superposition back to the two nodes. Single carrier cyclic prefix (SCCP)(More)
The joint channel estimation and data detection problem for Multi-Input Multi-Output Single Carrier Cyclic-Prefix (MIMO-SCCP) systems is considered in this paper. The detection process is completed by Block-Iterative generalized decision feedback equalizer (BI-GDFE) method. The BI-GDFE method provides the soft information of the transmitted signals to the(More)