Patent ID: 9450801
Filing Date: 2016-09-20
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A base station in an orthogonal frequency division multiplexing access (OFDMA) system, the base station comprising: a) a training sequence configuring logic for generating a first training sequence and a second training sequence, the first training sequence having a plurality of subcarriers and using coarse synchronization logic to determine a fine search window for a base station specific preamble of the second training sequence during fine synchronization, wherein the first training sequence includes signaling information, wherein the first training sequence is a preamble having a common synchronization channel comprising common synchronization subcarriers, the common synchronization subcarriers carrying a common sequence; b) Inverse Fourier Transform (IFT) logic adapted to provide an IFT on each of the subcarriers to generate a plurality of OFDM symbols; and c) transmit circuitry configured for transmitting the plurality of OFDM signals for reception by a subscriber station, wherein the subscriber station is configured to perform synchronization using the first training sequence.