1. A method of wireless communication, comprising:
generating a data unit comprising one or more first training field sequences;
encoding with an encoder each of the first training field sequences with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of the data unit;
and transmitting, at a transmitter, the data unit over a wireless channel to a receiver that refrains from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
2. The method of claim 1, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
3. The method of claim 1, wherein the pseudo-random spreading code is associated with a single receiver.
4. The method of claim 1, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
5. The method of claim 1, wherein the pseudo-random spreading code is based on an association identifier (AID).
6. A method of wireless communication, comprising:
receiving, at a receiver, at least a portion of a data unit comprising one or more first training field sequences, the one or more first training field sequences encoded with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of a data unit;
determining whether the pseudo-random spreading code is associated with the receiver; and
refraining from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
7. The method of claim 6, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
8. The method of claim 6, wherein the pseudo-random spreading code is associated with a single receiver.
9. The method of claim 6, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
10. The method of claim 6, wherein the pseudo-random spreading code is based on an association identifier (AID).
11. The method of claim 6, wherein said determining comprises cross-correlating each first training field with a reference first training field.
12. The method of claim 6, wherein said refraining comprises transitioning one or more components of the receiver to a low-power state.
13. The method of claim 6, wherein said refraining comprises refraining from decoding one or more of a second training field, a signal (SIG) field, and a data payload.
14. A wireless device comprising:
a receiver configured to receive at least a portion of a data unit comprising one or more first training field sequences, the one or more first training field sequences encoded with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of a data unit; and
a processor configured to:
determine whether the pseudo-random spreading code is associated with the receiver; and
refrain from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
15. The wireless device of claim 14, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
16. The wireless device of claim 14, wherein the pseudo-random spreading code is associated with a single receiver.
17. The wireless device of claim 14, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
18. The wireless device of claim 14, wherein the pseudo-random spreading code is based on an association identifier (AID).
19. The wireless device of claim 14, wherein said determining comprises cross-correlating each first training field with a reference first training field.
20. The wireless device of claim 14, wherein said refraining comprises transitioning one or more components of the receiver to a low-power state.
21. The wireless device of claim 14, wherein said refraining comprises refraining from decoding one or more of a second training field, a signal (SIG) field, and a data payload.
22. An apparatus for wireless communication comprising:
processing means for:
generating a data unit comprising one or more first training field sequences; and
encoding with an encoder each of the first training field sequences with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of the data unit; and
transmitting means for transmitting with a transmitter the data unit over a wireless channel to a receiver means that refrains from decoding with a decoder means a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
23. The apparatus of claim 22, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
24. The apparatus of claim 22, wherein the pseudo-random spreading code is associated with a single receiver.
25. The apparatus of claim 22, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
26. The apparatus of claim 22, wherein the pseudo-random spreading code is based on an association identifier (AID).
27. An apparatus for wireless communication comprising:
receiving means for receiving with a receiver at least a portion of a data unit comprising one or more first training field sequences, the one or more first training field sequences encoded with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of a data unit; and
processing means for:
determining whether the pseudo-random spreading code is associated with the receiver; and
refraining from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
28. The apparatus of claim 27, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
29. The apparatus of claim 27, wherein the pseudo-random spreading code is associated with a single receiver.
30. The apparatus of claim 27, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
31. The apparatus of claim 27, wherein the pseudo-random spreading code is based on an association identifier (AID).
32. The apparatus of claim 27, the processing means further for cross-correlating each first training field with a reference first training field.
33. The apparatus of claim 27, the processing means further for transitioning one or more components of the receiver to a low-power state.
34. The apparatus of claim 27, the processing means further for refraining from decoding one or more of a second training field, a signal (SIG) field, and a data payload.
35. A non-transitory computer-readable medium comprising code that, when executed, causes an apparatus to:
generate a data unit comprising one or more first training field sequences;
encode with an encoder each of the first training field sequences with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of the data unit; and
transmit with a transmitter the data unit over a wireless channel to a receiver that refrains from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the receiver.
36. The medium of claim 35, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
37. The medium of claim 35, wherein the pseudo-random spreading code is associated with a single receiver.
38. The medium of claim 35, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
39. The medium of claim 35, wherein the pseudo-random spreading code is based on an association identifier (AID).
40. A non-transitory computer-readable medium comprising code that, when executed, causes an apparatus to:
receive with a receiver at least a portion of a data unit comprising one or more first training field sequences, the one or more first training field sequences encoded with a pseudo-random spreading code, the pseudo-random spreading code being a function of an addressee of a data unit;
determine whether the pseudo-random spreading code is associated with the apparatus; and
refrain from decoding with a decoder a portion of the data unit when the pseudo-random spreading code is not associated with the apparatus.
41. The medium of claim 40, wherein the pseudo-random spreading code comprises a Hadamard or Walsh code.
42. The medium of claim 40, wherein the pseudo-random spreading code is associated with a single receiver.
43. The medium of claim 40, wherein the pseudo-random spreading code is associated with a group of receivers comprising the addressee.
44. The medium of claim 40, wherein the pseudo-random spreading code is based on an association identifier (AID).
45. The medium of claim 40, further comprising code that, when executed, causes the apparatus to cross-correlate each first training field with a reference first training field.
46. The medium of claim 40, further comprising code that, when executed, causes the apparatus to transition one or more components of the apparatus to a low-power state.
47. The medium of claim 40, wherein said refraining comprises refraining from decoding one or more of a second training field, a signal (SIG) field, and a data payload.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An organic light emitting diode display comprising:
a substrate member;
an organic light emitting element formed on the substrate member;
a phase retardation plate formed on the organic light emitting element; and
a selective reflective layer formed on the phase retardation plate, wherein the selective reflective layer selectively passes some of light therethrough and reflects the rest.
2. The organic light emitting diode display of claim 1, wherein
the selective reflective layer passes light that is parallel to a polarization axis and reflects light that is not parallel to the polarization axis, wherein light from outside that passes through the selective reflective layer is linearly polarized.
3. The organic light emitting diode display of claim 2, wherein
the phase retardation plate comprises an optical axis, wherein an intersection angle between optical axis and the polarization axis of the selective reflective layer is from about 40 to about 50 degrees.
4. The organic light emitting diode display of claim 3, wherein the phase retardation plate circularly polarizes light that is linearly polarized or linearly polarizes light that is circularly polarized, wherein the circularly polarized light is either one of left circular polarized light or right circular polarized light.
5. The organic light emitting diode display of claim 4, wherein the organic light emitting element reflects light incident thereon and reverses direction of circular polarization of light reflecting thereof.
6. The organic light emitting diode display of claim 2, further comprising
a polarizing plate disposed between the selective reflective layer and the phase retardation plate,
wherein the polarizing plate has a polarization axis in the same direction as the polarization axis of the selective reflective layer.
7. The organic light emitting diode display of claim 6, further comprising
a second selective reflective layer disposed between the polarizing plate and the phase retardation plate,
wherein the second selective reflective layer has a polarization axis in the same direction as the polarization axis of the selective reflective layer and the polarizing plate.
8. The organic light emitting diode display of claim 6, further comprising
a cholesteric liquid crystal (CLC) layer disposed between the phase retardation plate and the organic light emitting element.
9. The organic light emitting diode display of claim 8, wherein
the cholesteric liquid crystal layer passes either one of left circular polarized light or right circular polarized light and reflects the other.
10. The organic light emitting diode display of claim 9, wherein
the cholesteric liquid crystal layer is arranged such that light that is circular polarized through the polarizing plate and the phase retardation plate in sequence can pass the cholesteric liquid crystal layer.
11. The organic light emitting diode display of claim 1, wherein
the selective reflective layer has an effect of a mirror by reflecting light from outside when the organic light emitting element does not emit light.
12. The organic light emitting diode display of claim 1, wherein light emitted from the organic light emitting element includes various phases of light.
13. The organic light emitting diode display of claim 1, wherein the selective reflective layer comprises a dual brightness enhancement film (DBEF).
14. The organic light emitting diode display of claim 1, wherein the phase retardation plate comprises a 14 wavelength plate.
15. The organic light emitting diode display of claim 1, further comprising a cover substrate configured to bond with the substrate member via a sealant and enclose a space therein.
16. The organic light emitting diode display of claim 15, wherein the organic light emitting element and the phase retardation plate are enclosed within the space.
17. The organic light emitting diode display of claim 15, wherein the selective reflective layer is enclosed within the space.