Abstract: A computer-implemented method for determining the system frame number (SFN) of a radio frame includes receiving a synchronization signal sequence transmitted by a cell in a synchronization signal subframe, determining a physical cell identity (PCID) of the cell based on the synchronization signal sequence, equalizing the synchronization signal sequence using an ideal PCID vector of the determined PCID, partitioning the equalized synchronization signal sequence into multiple segments that include at least one segment overlapping with two other segments of the multiple segments, windowing each segment of the multiple segments, computing power spectra of the multiple windowed segments, determining an averaged power spectrum of the equalized synchronization signal sequence based on the power spectra of the multiple windowed segments, and estimating the SFN associated with the synchronization signal subframe based on a location of a peak signal of the averaged power spectrum of the equalized synchronization signal

Abstract: Techniques for performing a cell search for the presence of multiple cells in a frequency band are described. Each frequency band is segmented into sub-bands, each sub-band covering more than one raster scan (e.g., 100 kHz). Each segment has a predetermined center frequency for RF tuning. The number of tunable RF center frequencies can be equal to the number of segments in a frequency band. The techniques include obtaining IQ signals in a digital domain at a predefined RF center frequency. Further, the techniques include computing a matched filtering of PSS sequence with IQ samples of sub-bands with a predefined and predetermined waveform through matched filtering, and averaging correlations for smoothing the peaks that exceed a predetermined threshold to detect or reject the presence of a cell.

Abstract: Apparatus and systems, a well as methods and articles, may operate to determine whether to communicate using a space-time communications technique responsive to an indication derived from processing a short time sequence.

Abstract: A transmitter may transmit using OFDM-MIMO or OFDM-SDMA depending on channel characteristics.

Abstract: Apparatus and systems, a well as methods and articles, may operate to determine whether to communicate using a space-time communications technique responsive to an indication derived from processing a short time sequence.

Abstract: A transmitter may transmit using OFDM-MIMO or OFDM-SDMA depending on channel characteristics.