[PDF] Top 20 Performance of the Smart Antenna Aided Multicarrier DS CDMA and its Uplink

... an antenna array are less correlated, the attainable spatial di- versity gain becomes higher, hence the achievable performance ...an antenna array decreases, the performance difference between ... See full document

... achievable performance in asynchronous scenarios. Hence tra- ditional DS-CDMA cellular systems are interference limited and suffer from the so-called ’near-far’ effects, unless complex interference ... See full document

... traditional DS-CDMA system is that the MAI and MPI is reduced, as a benefit of using LAS ...the performance of these two systems communicating over different fading channels associated with different ... See full document

... Figure 8: BER versus perI thebiVV\JIJbiiR SNR Y 61I t performllancet of thle relay-assisted DS-CDMA using hoth rn-sequences and random spreading sequences and MSINR-assist ed MUD, when t[r] ... See full document

... near-single-user performance, while support- ing a multiplicity of users and hence increasing the user capacity of wireless ...than uplink (mobile-to-base) ...SC DS-CDMA or broadband ... See full document

... the performance of voice calls (new voice calls and soft handoff voice calls) under different ...--- its home cell and active cell, less soft handoff calls are generated means that more system resource in ... See full document

... of antenna arrays, namely a single antenna as well as an array having M = 2 correlated AEs or M = 2 uncorrelated AEs were ...an antenna array having M = 2 uncorrelated AEs achieved a better BER ... See full document

... Figure 7 illustrates the performance of the proposed schemes for several mobile speeds. The system is half-loaded and the number of antennas is P = 6. For simplicity, only the RMSE of the strongest path is shown. ... See full document

... in performance between a correlated and uncorrelated channel model is small, except that the correlation is noticeable [21, ...an uplink synchronous CDMA system is investigated, where users’ sig- ... See full document

... compared to conventional systems employing a single element per AA. Explicitly, observe in Figure 5 that the system employing a ( 2 ×4 )-dimensional AA for second order transmit diversity and fourth order beamforming ... See full document

... (MC DS-CDMA), which constitutes an attractive scheme [1], [2], [3], [4], based on a combination of DS-CDMA and ...MC DS-CDMA system in- vestigated in [5], [6], where it has been ... See full document

... (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink, as well as employing multi-dimensional Sphere Packing (SP) modulation for increasing the ... See full document

... PERFORMANCE RESULTS In this section the BER performance of the downlink of a generalized MC DS-CDMA system employing SSTS and using 32-chip Walsh codes as T-domain spreading sequences as[r] ... See full document

... MC DS-CDMA system of ...transmit antenna arrays are located sufficiently far apart so that the corresponding MC DS-CDMA signals experience independent ...M antenna arrays ... See full document

... From June 1997 to December 1997, he was a Vis- iting Scientist at the Institute of Radio Engineering and Electronics, Academy of Sciences of the Czech Republic, Prague. Since December 1997, he has been with the ... See full document

... in multicarrier technologies such as MC-CDMA and OFDM, and seeks a common multicarrier platform for all wireless multiple ac- cess based on his proposed CI ... See full document

... the performance of learning-based switching thresholds in conjunction with turbo coded AQAM MC DS-CDMA techniques, where the initial switching thresholds for BPSK, QPSK, 16QAM, 64QAM were ...BPS ... See full document

... an antenna array adds an extra dimension and makes the utilization of spatial diversity ...Omni-directional antenna system and sectored antenna system, adaptive antenna array system referred ... See full document

... However, the actual diversity gain achieved by using multiple BS antennas and by combining the subcarrier signals is time-variant, since the coherence bandwidth associated with the above[r] ... See full document

... In this paper, we have evaluated the BER of MC-DS- CDMA downlink systems subject to both CFO and IMD in frequency-selective Rayleigh fading channels. The BER anal- ysis, which is quite accurate in many ... See full document