US6535502B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot symbols
Assignee: Avago Technologies International Sales Pte Ltd
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Filing: 1999-06-23
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Granted: 2003-03-18
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Expires: 2019-06-23
Abstract
Abstract The invention includes a method of inserting pilot symbols into communication signals in which a plurality of signals to be transmitted are generated; each signal is divided into frames and each frame consists of a plurality of blocks. A pilot signal block is inserted into each frame of each signal before transmission. The pilot signal blocks are inserted in a time staggered fashion, spread though out the frame. The pilot symbols are time-staggered using an arbitrary algorithm for the pilot symbol insertion. This enables each receiver to perform more accurate, continuous channel estimation and results in a reduced Bit Error Rate (BER) and an improved Quality of Service (QoS). A receiver according to the invention makes use of pilot symbols of all other users in the system in order to improve its channel estimation for user k and this gives more reliable data detection.
Inventors
- 👤 Stephan ten Brink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:13
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04B1/00; H04B1/69; H04B1/707; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70701
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
A method of inserting pilot symbols into communication signals comprising: generating a plurality of signals to be transmitted from different users, each signal being divided into frames, each frame having of a plurality of blocks; generating a plurality of pilot signal blocks to be inserted into the signals before transmission; and inserting into each frame of each signal a pilot signal block; wherein the pilot signal blocks are inserted in a time staggered fashion, spread through out the frames of the plurality of signals to be transmitted from different users.
Claim 2
Independent Claim
90 words
A method of inserting pilot symbols into communication signals comprising: generating a plurality of signals to be transmitted from different users, each signal being divided into frames, each frame having of a plurality of blocks; generating a plurality of pilot signal blocks to be inserted into the signals before transmission; and inserting into each frame of each signal a pilot signal block; wherein the pilot signal blocks are inserted in a time staggered fashion, spread through out the frames of the plurality of signals to be transmitted from different users.
Claim 3
Dependent Claim
29 words
A method according to claim 1 , comprising: receiving a transmitted signal at a receiver using the pilot signal blocks from the plurality of signals transmitted from different users.
Claim 4
Dependent Claim
21 words
A method according to claim 1 , further comprising: using the pilot signals blocks at the receiver to perform channel estimation.
Claim 5
Independent Claim
89 words
A method of inserting pilot symbols into communication signals comprising: generating a plurality of signals to be transmitted from different users as a composite signal, with each signal divided into frames, each frame having a plurality of blocks; and for each signal, inserting a pilot signal block into each frame before transmission; wherein the pilot signal block of each signal is inserted so that the pilot signal blocks within the composite signal are time staggered through the frames of the plurality of signals to be transmitted from different users.
Claim 6
Independent Claim
89 words
A method of inserting pilot symbols into communication signals comprising: generating a plurality of signals to be transmitted from different users as a composite signal, with each signal divided into frames, each frame having a plurality of blocks; and for each signal, inserting a pilot signal block into each frame before transmission; wherein the pilot signal block of each signal is inserted so that the pilot signal blocks within the composite signal are time staggered through the frames of the plurality of signals to be transmitted from different users.
Claim 7
Dependent Claim
24 words
A method according to claim 1 comprising: receiver receiving a transmitted signal uses the pilot signal bloks which are present in the composite signals.
Claim 8
Dependent Claim
15 words
The method of claim 1 , wherein the pilot signal blocks are non-overlapping and contiguous.
Claim 9
Dependent Claim
15 words
The method of claim 1 , wherein the pilot signal blocks are overlapping and contiguous.
Claim 10
Dependent Claim
15 words
The method of claim 1 , wherein the pilot signal blocks are overlapping and non-contiguous.
Claim 11
Dependent Claim
15 words
The method of claim 4 , wherein the pilot signal blocks are non-overlapping and contiguous.
Claim 12
Dependent Claim
15 words
The method of claim 4 , wherein the pilot signal blocks are overlapping and contiguous.
Claim 13
Dependent Claim
15 words
The method of claim 4 , wherein the pilot signal blocks are overlapping and non-contiguous.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-03-17 | 2006-09-16 | 2007-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-17 | 2010-09-16 | 2011-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-17 | 2014-09-16 | 2015-03-18 | $7700.00 | Window Closed / Lapsed |