US8363739B2

5G,4G,3G

Title

Pilot Scheme For A Mimo Communication System

Application Number:

US20060088589

Publication Date:

29-01-2013

Current Assignee:

APPLE INC , NORTEL NETWORKS LIMITED , ROCKSTAR BIDCO LP

Family ID:

37900124

Application Date:

29-09-2006

Publication Country:

US

View on Espacenet

Priority Date:

30-09-2005

Declaring Company:

APPLE INC , GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD , MEDIATEK INC

Abstract  Abstract

The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

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