초록 ▼

Introduction of slotted mode transmission in one link of a CDMA communication connection is supported by considering power control associated with the other link. According to one exemplary embodiment, power control is implemented by increasing the power by a fading margin in the other link during t

Introduction of slotted mode transmission in one link of a CDMA communication connection is supported by considering power control associated with the other link. According to one exemplary embodiment, power control is implemented by increasing the power by a fading margin in the other link during the idle portion created by slotted mode transmission in the first link. According to another exemplary embodiment both links enter slotted mode substantially simultaneously, such that their idle periods overlap and power control is not needed during the idle transmit time.

대표청구항 ▼

Introduction of slotted mode transmission in one link of a CDMA communication connection is supported by considering power control associated with the other link. According to one exemplary embodiment, power control is implemented by increasing the power by a fading margin in the other link during t

Introduction of slotted mode transmission in one link of a CDMA communication connection is supported by considering power control associated with the other link. According to one exemplary embodiment, power control is implemented by increasing the power by a fading margin in the other link during the idle portion created by slotted mode transmission in the first link. According to another exemplary embodiment both links enter slotted mode substantially simultaneously, such that their idle periods overlap and power control is not needed during the idle transmit time. 1.3. 12. Apparatus, as claimed in claim 1, wherein said predetermined form of modulation further comprises square-root raised cosine pulse shaping on quadraphase phase shift keying. 13. Apparatus,as claimed in claim 1, wherein the one or more modulators increase the rates of the generated frequencies to form carrier frequencies and wherein the carrier frequencies are transmitted by said transmitter with at least two different forms of polarization. 14. Apparatus, as claimed in claim 13, wherein the different forms of polarization comprise forms of polarization selected from the group consisting of right hand circular polarization, left hand circular polarization and both right hand and left hand circular polarization. 15. Apparatus, as claimed in claim 1, wherein the one or more beams comprises a plurality of beams transmitted to a plurality of earth locations using at least some of the same carrier frequencies so that the carrier frequencies may be reused spatially by the satellite. 16. Apparatus, as claimed in claim 1, wherein the one or more modulators generate a sufficient number of different frequencies so as to allow up to a predetermined number of bands of frequencies within the available spectrum of frequencies and wherein the beams are arranged in a cluster configuration in which each cluster includes the predetermined number of bands and each band occupies a different portion of the available spectrum of frequencies. 17. Apparatus, as claimed in claim 16, wherein the predetermined number of bands is four. 18. Apparatus, as claimed in claim 16, wherein the bands are transmitted with at least two different polarizations. 19. Apparatus, as claimed in claim 1, wherein the predetermined number of data cells is four. 20. Apparatus, as claimed in claim 1, wherein the predetermined error correction code comprises Reed-Solomon code. 21. Apparatus, as claimed in claim 1, wherein the frame bodies bear four times K ATM cells and comprises K code words where K=3 or 6. 22. Apparatus, as claimed in claim 1, wherein the transmission rate of at least some of the bands is 90-100 megasymbols per second. 23. Apparatus, as claimed in claim 22, wherein the frequency range of at least some of the bands is substantially 125 MHz. 24. Apparatus, as claimed in claim 1, wherein at least some of the frames include null symbols so that each frame includes a predetermined number of symbols irrespective of the amount of data in the frame. 25. Apparatus, as claimed in claim 1, wherein the one or more encoders comprise an inner encoder, wherein the correction code comprises an inner code generated by the inner encoder and wherein at least some of the frames include flush bits resulting from tailing off of the inner encoder. 26. Apparatus, as claimed in claim 25, wherein said inner code defines an inner code rate of substantially 3/8 or 6/8. 27. Apparatus, as claimed in claim 1, wherein the one or more encoders comprise an outer encoder connected to generate blocks of outer code in at least some of the data frames and wherein the blocks including outer code are interleaved. 28. Apparatus, as claimed in claim 27, wherein the interleaved code blocks comprise three or six outer code blocks depending on whether the coding is light or heavy. 29. In a processing satellite communication system, a method of generating and transmitting data in an available spectrum of frequencies suitable for use by a downlink transmitting system of a processing satellite comprising the steps of: receiving data cells for transmission; generating a first frame type signal; generating a second frame type signal; grouping a predetermined number of the data cells with a predetermined error correction code to generate a first type of frame body in response to said first frame type signal and to generate a second type of frame body in response to said second frame type signal; grouping the frame bodies with header symbols and with trailer symbols to generate data frames comp