PILOT DESIGN FOR IMPROVED CHANNEL AND INTERFERENCE ESTIMATE

摘要

PROBLEM TO BE SOLVED: To provide techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates.

SOLUTION: A terminal generates pilot symbols for a first cluster in a time frequency block based on a first sequence, and generates pilot symbols for a second cluster based on a second sequence. The first and second sequences include common elements arranged in different orders and are considered as different versions of a single sequence. The terminal transmits the pilot symbols in their respective clusters. A base station obtains received pilot symbols from multiple clusters in the time frequency block. The base station forms each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and processes the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.

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