Adaptive parallel interference cancellation receivers with diversity combining for multicarrier DS CDMA systems

... bandwidth of MT -CDMA is comparable with that of DS- CDMA scheme Table 2.1 Features of various CDMA systems DS- MC -CDMA MC -DS- CDMA MT -CDMA of N N N Processing gain G G G GN TsN / G TsN TsN CDMA Number ... APIC receivers for synchronous MC -DS- CDMA 5.1 BER Performance of various receivers in Rayleigh fading channel at SNR of 20dB for synchronous MC -DS- CDMA 5...

Ngày tải lên: 26/09/2015, 11:07

... estimates of the signal interference) TURBO SPACE-TIME RECEIVERS WITH RATE COMPATIBLE PUNCTURED TURBO (RCPT) CODES The RCPT encoder will turbo encode the input data sequence of length Lin into a coded ... characteristic of turbo codes Rate compatible punctured turbo codes are investigated in a turbo space-time coded MIMO-CDMA system as a possible way of achiev...

Ngày tải lên: 21/06/2014, 23:20

... filters with block memory which has the minimum BER versus Eb / N0 performance Figure shows the BER versus Eb / N0 performance for different number of users N of the proposed minimum BER DS-CDMA ... together with the k results from (19), it is seen that (18) can be rewritten as 2.7 BER = = 0, ri = − BER {r0 (z),r1 (z), ,rN −1 (z)} (22) MINIMUM BER RECEIVER FILTER...

Ngày tải lên: 21/06/2014, 22:20

... problem of blind multiuser detection for asynchronous MC DS-CDMA systems equipped with multiple transmit and receive antennae This is nowadays an interesting research topic, since MC modulation formats ... rule, which is optimal for hard-quantized statistics; on the other hand, for nr From now on, we adopt the normalization m = Blind Receivers for Multicarrier DS/CDMA...

Ngày tải lên: 23/06/2014, 01:20

... present paper, an adaptive near-far robust synchronization array detector for space-time asynchronous DS-CDMA signals is developed The primary requirement needed for the proposed timing synchronization ... scheme with other timing estimation techniques is also evaluated in Section Finally, concluding remarks are given in Section Computationally Efficient Blind Code Synchr...

Ngày tải lên: 23/06/2014, 01:20

... the performance of the CPIC receiver, and we can see that the APIC outperforms the CPIC for μ ∈ (0, 0.5) Under the same simulation settings, the BER performances of the one- and two-stage APIC receiver ... this paper, we designed an adaptive receiver for the multicarrier DS-CDMA system over Rayleigh fading channels and evaluated the performance of the system A c...

Ngày tải lên: 22/06/2014, 19:20

... UL PIC: System Simulations and Prototype Field Trials [8] T Suzuki, Y Takeuchi, F Watanabe, and S Niida, “Implementation and field test result of a base station canceling CDMA interference for ... statistics, and so forth—in different parts of the cell Each of these channel characteristics is described by physical parameters WCDMA UL PIC: System Simulations and Prototyp...

Ngày tải lên: 23/06/2014, 01:20

... Zarifi and A B Gershman, Performance analysis of subspace-based signature waveform estimation algorithms for DS-CDMA systems with unknown correlated noise,” in Proceedings of 6th IEEE Workshop on ... user signature vectors are orthogonal, the simplified versions of these expressions have been also obtained for the high SNR regime The effect of the correlated...

Ngày tải lên: 22/06/2014, 23:20

... for long code multiuser CDMA systems, ” IEEE Trans Signal Processing, vol 48, no 4, pp 988–1001, 2000 [19] Z Yang and X Wang, Blind turbo multiuser detection for long-code multipath CDMA, ” IEEE ... user and N = 16 for the low rate user Optimal spreading code design and random linear transform design will be investigated in future work Blind Multiuser Detection for...

Ngày tải lên: 23/06/2014, 00:20

... code assignment protocols for both centralized and distributed Ad Hoc Networks We present analytical and simulation results for the proposed code assignments Keywords: Ad Hoc Network, DS- CDMA, ... Spectrum and Ad Hoc Network 2.2 Code Assignment in Ad Hoc Network 2.2.1 Strategies for Code Assignment DS- CDMA code assignment schemes require tha...

Ngày tải lên: 26/09/2015, 10:59

... May 2001 J Wang and M Amin, GPS interference cancellation performance for single and multiple MVDR beamformers,” in Proceedings of the 40th Asilomar Conference on Signals, Systems and Computers, ... represents the interference cancellation performance upon convergence with adaptive single MVDR beamforming method Figure 3(b) depicts the performances of all beamformer...

Ngày tải lên: 21/06/2014, 22:20

... Advances in Signal Processing [25] K M Wu and C L Wang, “Soft-input soft-output partial parallel interference cancellation for DS-CDMA systems, ” in Proceedings of the International Conference on Communications ... selection/maximal ratio combining and synchronous DS-CDMA, and recall the main functioning EURASIP Journal on Advances in Signal Processing principles o...

Ngày tải lên: 21/06/2014, 05:20

... interference cancellation at the AP taking into account the asynchronous interference model induced by the MAC layer B3 τ3 INTERFERENCE CANCELLATION Since training symbols are most reliable for ... [17] A M Kuzminskiy and H R Karimi, “Cross-layer design of uplink multiple-antenna interference cancellation for WLAN with CSMA/CA in open access networks,” in Pro...

Ngày tải lên: 22/06/2014, 19:20

... precoder for MIMO channels with imperfect CSI is designed in [25] This approach is also used in [26, 27] to design robust adaptive beamformers, and in [28] to design a robust minimum variance beamformer ... achievable rate CONCLUSIONS In this paper, a robust bit-loading algorithm for an adaptive OFDM system with transmit and/or receive diversity that operates in time-va...

Ngày tải lên: 22/06/2014, 19:20

... the interferences without any reduction of the transmission rate, while they somewhat increase the complexity of the receiver 4.1 Interblock interference cancellation In the block transmission schemes, ... proposed interference cancellation schemes can significantly improve bit error rate (BER) performance of the SC-CP system with the insufficient GI, and especially, the propo...

Ngày tải lên: 22/06/2014, 19:20