High efficiency long training field symbol transmission for multiple transmission streams
摘要
說明書
With increasing number of transmission streams, the computation required to estimate the wireless channel over these transmission streams becomes increasingly complex using current standards for channel estimation. For example, the increasing size of mapping matrices for high efficiency long training field (HE-LTF) symbol generation with increasing transmission streams necessitates systems and methods to reduce inherent computational complexity and power demands of emerging standards.
Embodiments described herein provide a system for transmitting High Efficiency Long Training Field (HE-LTF) symbols to a receiver over a wireless channel. A transmitter is configured to transmit HE-LTF symbols corresponding to an LTF mapping matrix for determining a plurality of wireless channel properties of the wireless channel over which the HE-LTF symbols are transmitted by the transmitter. Control circuitry, coupled to the transmitter, is configured to determine a portion of the LTF mapping matrix for calculating, at a receiver, a wireless channel property of the plurality of wireless channel properties based on a subset of the HE-LTF symbols mapped by the portion. The portion is less than the entire LTF mapping matrix, in some implementations. The control circuitry is further configured to assemble, based at least on the determined portion of the LTF mapping matrix, the HE-LTF symbols mapped by the LTF mapping matrix.
