Patent ID: 8423037
Filing Date: 2013-04-16
Classification: H04B

Abstract:
1. A method comprising: receiving information descriptive of a type of radio access which a user equipment is acting on; and in response to receiving the information descriptive of a particular type of radio access, transmitting from a multiple transmit antenna user equipment, where the particular type of radio access is a Rel-8/9 LTE type radio access, where the transmission is made on a physical uplink shared channel, where the transmitting further comprises cyclically delaying signals from different ones of the multiple transmit antennas, relative to a first transmit antenna, by an antenna specific delay such that the user equipment appears to a base station as having a single transmit antenna, and where the antenna specific delay determined such that the delay does not reduce coherence bandwidth of the resulting signal, when the signals from the multiple transmit antennas are combined, below a typical channel coherence bandwidth, and such that a delay spread of the transmitted signal is increased by an acceptable amount when compared to a cyclic prefix length.