Patent ID: 8532133
Filing Date: 2013-09-10
Classification: H04B,H04L

Abstract:
1. A transmitting device for transmitting data symbols and pilot symbols in an OFDM transmission system, the transmitting device configured to: generate said data symbols and said pilot symbols; and transmit said data symbols and pilot symbols using a plurality of subcarriers of said OFDM transmission system, wherein said generating said pilot symbols includes selectively generating a first type pilot symbol and a second type pilot symbol being orthogonal to said first type pilot symbol so that a pilot symbol pattern in a frequency dimension comprises at least said first type pilot symbol to be transmitted using a predefined subcarrier and the second type pilot symbol to be transmitted using another predefined subcarrier, said pilot symbol pattern has a different pattern in a time dimension from a succeeding pilot symbol pattern, and first pilot symbols are comprised in said pilot symbol pattern and second pilot symbols are comprised in said succeeding pilot symbol pattern, at least some of the first and second pilot symbols having a same time allocation and being alternately identical and orthogonal to each other.