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Journals and Conferences
The increasing requirements on cloud computing entail building up large numbers of large-scale data centers which require a surprising amount of energy. With the gradual depletion and price escalation of traditional energy, operating data center in an energy efficient way is an emerging urgent problem. However, most existing researches of resource… (More)
Digital predistortion is a predominant technique for the linearization of power amplifier. Memory polynomial is often used to describe the PA model with memory effect. In this paper, based on memory polynomial, a new PA modeling approach which combines look-up table with characteristic time-delay is proposed. Simulation results show that the DPD based on… (More)
The partner selection problem with a due date constraint in virtual enterprises is proved to be NPcompleteness problem. So it cannot have any polynomial time solution algorithm at present. Nonlinear integer programming model for the problem is established. The objective function and constraint function of the model have monotonicity properties. Based on the… (More)
Digital predistortion, which is used to compensate for the nonlinearity introduced by power amplifiers, plays an important role in the linearization techniques. Saturation distortions caused by high peak-to-average ratio of input signal, however, cannot be compensated through digital predistortion. As a result, power amplifiers have to operate with back-off… (More)
In this paper, a high-efficiency LDPC encoder for CMMB based on LU decomposition with dynamic programming is proposed. Results from simulation and implementation shows that this method can decrease complexity of encoding and improve encoding rate effectively.
In the paper, the RS encoding algorithm widely used in communication system is described briefly. Taking RS encoder in DVB system for example, we introduce the structure of RS encoder. And an improved algorithm on Galois Field multiplier is proposed which saves the numbers of the XOR gates. Finally, its feasibility and validity have been verified through… (More)
An improved adaptive algorithm combined with Least Mean Square (LMS) and Recursive Least Squares (RLS) algorithm is presented in this paper. Simulation results show that in comparison to the traditional algorithm, this joint method can not only achieve a satisfied linearization performance, but reduce the calculation amount and enhance convergence stability.
As CMMB network is single-frequency network (SFN), the feedback cancellation of digital on-channel repeater becomes an outstanding problems about network coverage. But the traditional digital on-channel repeater has more inter-symbol interference (ISI), so this paper puts forward an equalized digital on-channel repeater (DOCR), which can effectively correct… (More)