Abstract: A method, apparatus and system for improving block error rate performance of a receiver having an iterative decoder in a communication system, the method, apparatus and system includes receiving an encoded frame of data, the encoded frame of data includes a quantity of code blocks where each code block has a corresponding code block size, determining a first maximum number of iterations for each of the code blocks of the encoded frame of data iteratively performing a decoding operation on a first code block until the occurrence of one of (a) the first maximum number of iterations has been reached and (b) the first code block has converged, and determining a second maximum number of iterations for the remaining code blocks of the encoded frame of data based on the number of actual iterations used to decode the first code block.

Abstract: An initial ranging detection for an orthogonal frequency division multiple access (OFDMA) wireless communication system entails removing data sub-carriers from samples of an OFDMA signal in order to suppress inter-carrier interference (ICI) between the data sub-carriers and initial ranging sub-carriers, coherently summing the resulting samples to boost signal energy, and applying a sliding window FFT to the coherently summed samples for correlating each result of the sliding window FFT with each one of a set of predetermined codes. The suppression of ICI is done by removing the cyclic prefix, performing an FFT to transform to the frequency domain whereupon the initial ranging sub-carriers are zeroed. An IFFT is then performed to return to the time domain. The cyclic prefix is then added and the new samples are subtracted from the originally received samples. The resulting samples are free of ICI and can then be coherently summed to boost signal energy.

Abstract: A method, apparatus and system for improving block error rate performance of a receiver having an iterative decoder in a communication system, the method, apparatus and system includes receiving an encoded frame of data, the encoded frame of data includes a quantity of code blocks where each code block has a corresponding code block size, determining a first maximum number of iterations for each of the code blocks of the encoded frame of data iteratively performing a decoding operation on a first code block until the occurrence of one of (a) the first maximum number of iterations has been reached and (b) the first code block has converged, and determining a second maximum number of iterations for the remaining code blocks of the encoded frame of data based on the number of actual iterations used to decode the first code block.

Abstract: The present invention provides an improved channel quality indicator indicia for OFDM communication environments. In addition to taking into consideration carrier-to-interference ratios, the present invention also takes into consideration the degree to which the channel response varies among the sub-carriers throughout the OFDM frequency band. The carrier-to-interference ratio and the degree of channel response variation are directly or indirectly used by a base station to select coding and modulation schemes for transmissions from the base station to the mobile terminal reporting these factors. Further, scheduling of data sent to the mobile terminal and other mobile terminals competing for the same channel resources may also be based in part on the carrier-to-interference ratio and the degree to which the channel response varies.