Patent ID: 8571132
Filing Date: 2013-10-29
Classification: H04B,H04L

Abstract:
1. In a wireless OFDMA communication that estimates multiple channels in a MIMO system operating over a given frequency band, wherein channel estimation is more efficient for allocating resources when users' symbols are transmitted in a hopping pattern over the full band, a method comprising: a) transmitting a user's symbols in a hopping pattern over the full broadband; b) receiving from a receiver a plurality of pilot signals in a more than one subband and a neighboring subband of a frequency band having an in range portion defined by a contiguous range of frequencies adjacent to the edge of the subband and an out of range portion defined by the remaining frequencies in the neighboring subband; c) receiving a channel quality indicator (CQI) indicative of channel quality of each subband observed in a wireless device; d) estimating a channel response-based on some of the plurality of pilot signals in more than one subband and the pilot signal in the range portion of the neighboring subband; and e) assigning the transmission to occur in either the signal subband or to operate in more than one subband based on a determination of the channel quality indicator.