[PDF] Top 20 A low-complexity synchronizer for OFDM-based UWB system

... A Low-Complexity Synchronizer for OFDM-Based UWB System Hsuan-Yu Liu, Student Member, IEEE, and Chen-Yi Lee, Member, IEEE Abstract—In current ultra-wideband ... See full document

... radio UWB below 960MHz has raised interests in the applications of radio frequency identification (RFID), localizer and sensor networks ...over a much wider frequency band than conventional carrier- ... See full document

... overall system performance compared to those interpolation-based ...has low design complexity with the low power feature, making it very suitable for realizing cost-effective ... See full document

... representing a quantized precoding matrix is fed ...from a set of predetermined matrices called a ...search for the optimum precoder requires a high computational ...propose a ... See full document

... In February, 2002, UWB system is approved A sketch of the wideband amplifier which contains input by the Federal Communications Commission (FCC) [1]* matchmg network, main amplifier and [r] ... See full document

... as a function of the sym- bol index at SNR = 15 dB is shown in ...searches for the whole symbol duration, its acquisi- tion time is ...is a tracking technique that has relatively longer acquisition ... See full document

... II. OFDM S YSTEM AND S IGNAL M ODELS In the following discussion, all the quantities indexed with l belong to the lth ...symbol. A simplified OFDM system model is shown in ...each OFDM ... See full document

... MBOA-UWB system. earlier Mode-1 operation whereas the group A and the group C are for the later Mode-2 ...ns. For the conventional phase-locked loop (PLL)-based frequency ... See full document

... glitches, a Schmitt trigger buffer is applied at the 1st stage to stabilize clock transitions and both second and third stages to enhance the driving ...Hence, a -multiphase ADCM with full-cycle ... See full document

... frequencies, a output stage with functionalities of SH-SSB mixer and edge combiner is proposed as shown in ...in a certain polarity and injecting them into the loads, the single side-band frequency can be ... See full document

... exists a residual frequency tracking error that introduces ICI and de- grades the performance of the acquisition ...scheme, a computer simulation is ...(22) for SNR dB and SNR dB, ...results ... See full document

... and a two stages scattered pilots ...33dB. A novel phase predictive scheme reduces 3%~20% operations of phase accumulators for different GI ...hardware complexity. Moreover, if extreme ... See full document

... The direct ZF equalization method, relying on the inversion of the ICI matrix, may require very high computational complexity.. In this paper, we have proposed a low-complexity ZF algori[r] ... See full document

... receiver complexity, especially when the number of subcarriers is ...paper, low-complexity Kalman channel estimator structures are derived for OFDM systems with and without virtual ... See full document

... key words: interpolation, low-cost 1. Introduction Various digital video systems need different spatial and tem- poral resolutions, so di fferent format standards are used to store, transmit and display digital ... See full document

... The algorithm can also re- solve concentric RSSs with different numbers of folds, because RSSs with different numbers of folds are de- tected at different iterations(k-th i[r] ... See full document

... computation for primitive-level operations, the filtering scheme as shown in ...is a hybrid scheme that combines culling test and highlight test before sub- division [12], ...whether a triangle is ... See full document

... In Fig. 5, the BER performance of Method 1 in ITU Veh. A channel is demonstrated. Although not specified in the DVB standard, we artificially extend the CP length to simulate the CP = N/2 and CP = N cases to make ... See full document

... by A. Said and W.A. Pearlman, has proven to be a computationally simple and e$cient method for image ...propose a novel algorithm to improve the performance of EZW ...is based on two ... See full document

... In this paper, we propose a new adaptive echo canceller to remedy the problem mentioned above. In our work, the FIR and the IFIR filters are overlapped instead of being directly cascaded. Due to this over- lapping ... See full document