Abstract The use of frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can significantly improve the downlink bit error rate (BER) performances of DSand MC-CDMA in a frequency-selective fading channel. However, the uplink BER performance degrades due to strong multi-user interference (MUI) since different users’ signals go through different channels and henc...

In the development of encoding algorithms for image, video, and other mixed media transmissions, it is important to note that the channel “seen” by the applications is the physical channel as modified by the error-correcting mechanisms used at the physical level. Therefore, the statistics of the residual error process is relevant to the design of encoding algorithms. In this paper, we study the...

The new digital radio system DAB (Digital Audio Broadcasting), developed within the Eureka 147 project is a very innovative and universal multimedia broadcast system that has the potential to replace existing AM and FM audio broadcast services in many parts of the world in the near future. DAB employs coded OFDM technology that enables it for mobile reception and makes receivers highly robust a...

Coded as conventional color-map addresses, a colormapped image can be decoded only when a full color map address is available. We present the first known scheme that adds progression capability in spatial resolution as well as color resolution, enabling more flexible progression of color-mapped images. During coding, approximate pixel colors are keyed with truncated versions of the original col...

Nonlinear predictive split vector quantization (NPSVQ) and classiied NPSVQ (CNPSVQ) are introduced to exploit the correlation among the speech spectral parameters from two adjacent analysis frames. By interleaving intraframe SVQ with forward predictive SVQ, error propagation is limited to at most one adjacent frame. At an overall bit rate of about 21 bits/frame, NPSVQ can provide similar coding...

Two coded modulation schemes with the same bit-rate and decoding complexity are designed and compared. The first scheme combines Trellis Coded Modulation (TCM), symbol interleaving, and orthogonal frequency-division multiplexing (OFDM). The second system combines bit-interleaved coded modulation (BICM), based on a convolutional code, with OFDM. Both systems are combined with a space-time block ...

We present a novel entropy coding technique that is based on recursive interleaving of variable-to-variable-length binary source codes. An entropy coder using this technique is a general purpose module that can be used in a wide variety of data compression algorithms. The encoding process is adaptable in that each bit to be encoded has an associated probability-of-zero estimate that may depend ...

Wireless video streaming is a challenging task due to limited bandwidth and error-prone characteristics of the wireless channels. In order to ensure high quality wireless video streaming, error control techniques such as forward error correction (FEC) is needed. It is well-known that, in mobile radio channels, errors are not limited to single bit errors but tend to occur in bursts. In order to ...

Nonlinear predictive split vector quantization (NPSVQ) and classi ed NPSVQ (CNPSVQ) are introduced to exploit the correlation among the speech spectral parameters from two adjacent analysis frames. By interleaving intraframe SVQ with forward predictive SVQ, error propagation is limited to at most one adjacent frame. At an overall bit rate of about 21 bits/frame, NPSVQ can provide similar coding...

We have suggested bit-interleaved coded modulation with soft decision iterative decoding (BICM-ID) for bandwidth-efficient transmission over Gaussian and fading channels. Unlike trellis coded modulation, BICM-ID has a small free Euclidean distance but large diversity order due to bit interleaving. With iterative decoding, soft bit decisions can be employed to significantly improve the condition...