08514954 is referenced by 7 patents and cites 7 patents.

The description herein relates to pilot designs for an Orthogonal Frequency Division Multiplexing (OFDM) based communication system. In the preferred embodiment, the communication system is one operating according to the IEEE 802.16m, or WiMax, standard. In general, an OFDM transmitter operates to insert pilot symbols into a resource of a transmit frame according to a predetermined staggered pilot symbol pattern defining pilot symbol locations within the resource of the transmit frame. The predetermined pilot symbol pattern is defined such that pilot symbols are located at or near time boundaries of the resource, at or near frequency boundaries of the resource, or both. By doing so, when generating a channel estimate for the communication channel between the OFDM transmitter and an OFDM receiver based on the pilot symbols, extrapolations needed to estimate the channel near the boundaries of the resource are optimized, thereby improving overall channel estimation accuracy.

Title
Pilot design for wireless system
Application Number
12/397723
Publication Number
8514954 (B1)
Application Date
March 4, 2009
Publication Date
August 20, 2013
Inventor
Hang Zhang
Napean
CA
Sophie Vrzic
Nepean
CA
Jianglei Ma
Kanata
CA
Mo Han Fong
L'Orignal
CA
Dong Sheng Yu
Ottawa
CA
Agent
Wolfe SBMC
Assignee
Microsoft Corporation
WA, US
IPC
H04K 1/10
View Original Source