[PDF] Top 20 A Low-Complexity Minimum-Interference Symbol Time Estimation for OFDM Systems

... against symbol index. SNR = 15 dB. Figs. 4 and 5. The estimated ST as a function of the sym- bol index at SNR = 15 dB is shown in ...searches for the whole symbol duration, its acquisi- tion ... See full document

... in a simplified notation as and the ratio is the signal-to-ISI power ratio ...the minimum ISI power sum appears in the denominator of ...by a raised-cosine filter impulse response with a ... See full document

... as a function of ...the low-complexity frequency detector is the quantization ...frequency estimation error due to quantization is a function of the frequency offset, as shown in ...the ... See full document

... over a wireless channel modeled as a multipath fading channel corrupted by ...window for each OFDM symbol can be suitably positioned such ... See full document

... on a simple intercarrier interfer- ence (ICI) suppression scheme that linearly combines the inter- symbol interference (ISI)-free part of a cyclic prefix (CP) and its corresponding part in an ... 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

... 3.3. Symbol Boundary Detector During the coded preamble, the Golay-code matched fil- ter will generate peak values for the boundary detector in each preamble ...in a multipath channel the inter-chip ... See full document

... performance for CFO ...case. For the MTB estimate, however, the effects of SNR mismatch and initial CFO estimation error be- come apparent at low ...lasts for short symbol ... See full document

... mation, a ffine precoder 1. Introduction MIMO-OFDM has proven to be the key enabler of high- speed, bandwidth efficient broadband communication sys- tems, such as IEEE ...intersymbol interference can be ... See full document

... the time-domain equalised signal r is fed into an entry-wise minimum-distance symbol detector for data ...the OFDM receivers, the FDE for SCBT requires an additional FFT module ... See full document

... MIMO-OFDM systems. In practical systems, the precoding matrix is computed at the receiver, and then fed back to the ...representing a quantized precoding matrix is fed ...from a set of ... See full document

... STBC interference canceller are summarized in Table ...channel estimation, but the bounding floor at high SNR caused by interference noises is very ...ICI interference cancellation methods in ... See full document

... According to the proposed iterative approaching algorithm, the global maximum of log-likelihood function can be definitely found to achieve both frequency and time synchronization[r] ... See full document

... 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 (UWB) baseband synchro- ... See full document

... In OFDM receivers, an accurate signal-to-noise ratio (SNR) estimation is desirable for all sorts of operations involved in high- performance baseband ...Next, a blind SNR estimation ... See full document

... tational complexity increases accordingly. Thus, there is a compromise between the TEQ order and the ...compensate for that effect ...give a higher order for the TEQs in the early ... 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

... same minimum detection time as it is inversely related to the signal ...As a consequence, the minimum detection time of the signal-initiated RT has not been estimated ... See full document

... method for CP-free OFDM systems which applies the VCs, referred to as the Li method hereafter, was presented in ...constructed for SISO-OFDM systems without oversampling ... See full document

... Using the time-domain periodicity, which can be obtained by inserting zeros at some positions of frequency-domain OFDM symbols, a method for constructing the noise subspace is develop[r] ... See full document