Apparatus and method for channel estimation using training signals with reduced signal overhead
AssigneeSamsung Electronics Co., Ltd.
InventorsYinong Ding, Farooq Khan, Cornelius van Rensburg
Life of this patent
Estimating the term…
Abstract
A base station comprising an antenna array including M antennas for transmitting data to a plurality of subscriber stations. The base station generates a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence and generates a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence. The second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence. The first pilot signal preamble is transmitted from a first antenna and the second pilot signal preamble is transmitted from a second antenna concurrently with transmission of the first preamble.
Claims23
A base station for communicating with a plurality of subscriber stations of a wireless network, the base station comprising:
- an antenna array comprising M antennas for transmitting data to the plurality of subscriber stations;
- and
- a cyclic prefix insertion block for generating pilot signal preambles transmitted from the M antennas, wherein the cyclic prefix insertion block generates a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence and generates a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence, wherein the second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence.
A wireless network comprising a plurality of base stations capable of communicating with a plurality of subscriber stations, each one of the plurality of base stations comprising:
- an antenna array comprising M antennas for transmitting data to the plurality of subscriber stations;
- and
- a cyclic prefix insertion block for generating pilot signal preambles transmitted from the M antennas, wherein the cyclic prefix insertion block generates a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence and generates a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence, wherein the second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence.
A method for transmitting from an antenna array comprising M antennas capable of transmitting data to a plurality of subscriber stations, the method comprising the steps of:
- generating a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence;
- generating a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence, wherein the second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence;
- transmitting the first pilot signal preamble from a first one of the M antennas;
- and
- transmitting the second pilot signal preamble from a second one of the M antennas, wherein the first and second pilot signal preambles are transmitted concurrently.
A base station comprising an antenna array including M antennas for transmitting data to a plurality of subscriber stations, wherein the base station generates a first pilot signal preamble by adding a first cyclic prefix to a first pilot signal sequence and generates a second pilot signal preamble by adding a second cyclic prefix to a second pilot signal sequence, wherein the second pilot signal sequence is a circularly shifted copy of the first pilot signal sequence.
Dependencies are inferred from the claim text.