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In three-dimensional video (3DV), two cameras capture the same scene from different viewpoints. Color and focus variations between the camera views may deteriorate the 3DV quality and performance of 3DV coding. Therefore, we need to correct the color and focus discrepancy between the camera views. In this paper, we propose algorithms that color and focus correction are combined in a preprocessing...
In this paper, a new carrier frequency offset (CFO) estimation algorithm is proposed for MIMO-OFDM based wireless local area network (WLAN) systems, IEEE 802.11ad. The existing hardware-efficient auto-correlation scheme which subsamples the short train symbol can be used for low-complexity. However this method has a limitation of performance degradation. Therefore, we combine the subsampled auto-correlation...
Image rectification is one of the most complex pre-processing techniques for multi-view video coding (MVC). It corrects image distortion and simplifies MVC matching operations by transforming images into a standard coordinate system. Therefore, the rectification can improve both image quality and coding efficiency for MVC. In this paper, we propose two low complexity image rectification schemes for...
The 3rd generation partnership project (3GPP) long term evolution (LTE) is designed for high speed data rate, higher spectral efficiency, improved services, and lower latency as well as high-capacity voice support. LTE uses orthogonal frequency division multiplexing access (OFDMA) scheme for the downlink transmission and single carrier frequency division multiple access (SCFDMA) in uplink. Main challenges...
A new technique is proposed for efficient encoding of low density parity check (LDPC) codes using the concept of approximate lower triangulation (ALT). Parity check matrix is preprocessed and encoded in O(n) complexity. This encoding technique is applied in the IEEE 802.11n based H matrix where the complexity is compared with the Richardson algorithm. The proposed adaptive message length (AML) encoding...
Breadth-first search sphere decoding (SD) is considered as one of the most promising methods for multiple-input multiple-output (MIMO) detection due to its low computational complexity, capability of providing fixed throughput and pipelining features. However, the performance of the conventional breadth-first search SD is significantly degraded if the number of candidate symbols kept at each level...
In this paper, a robust, low-complexity timing synchronization algorithm suitable for 5.9 GHz dedicated short range communications (DSRC) system is proposed. The proposed method uses cross-correlation technique to detect the starting point of both a short training symbol and the guard interval of the first long training symbol. This allows the proposed algorithm to have low-complex architecture. Compared...
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